Uppcl Ae(Electrical Engineering) Online Test Series First

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Allexam93
A
Allexam93
Community Contributor
Quizzes Created: 1 | Total Attempts: 335
| Attempts: 335
Quiz Flashcard
SettingsSettings
Please wait...
  • 1/200 Questions

    ACSR (Aluminium Conductor Steel Reinforced) are used as

    • Over head transmission lines.
    • Super conductors.
    • Fuse
    • Underground cables.
Please wait...
About This Quiz

INSTRUCTIONS
1. NUMBER OF QUESTIONS 200
2. HAS A TIME LIMIT OF 180 MINUTES
3. HAS A PASS MARKS OF 30%
4. QUESTIONS PER PAGE 1
5. EACH QUESTIONS HAS 1 MARKS
6. NEGATIVE MARKING FOR EACH QUESTIONS 0.25
7. WILL ALLOW TO YOU GO BACK ,SKIP AND CHANGE YOUR ANSWERS
8. WILL ALLOW TO YOU PRINT OUT YOUR RESULT AND CERTIFICATE AFTER PUBLISHING OF RESULT
9. WILL ALLOW TO YOU PRINT OUT YOURS RESPONSE SHEET WITH CORRECT ANSWER KEY AND EXPLANATION AFTER PUBLISHING OF RESULT
10. WE WILL PROVIDE YOURS RESULT,CERTIFICATE AND YOUR RESPONSE SHEET TO YOURS EMAIL ID AT END OF ONLINE TEST AFTER PUBLISHING OF RESULT
11. BSNL TTA ONLINE TEST SERIES WILL AVAILABLE FROM 03/11/2016(3PM) TO
04/11/2016(8PM)
12. RESULT WILL PUBLISH ON 04/11/2016(9PM) ON WWW. ALLEXAMREVIEW. COM

Uppcl Ae(Electrical Engineering) Online Test Series First - Quiz

Quiz Preview

  • 2. 

    At what rate percent per annum will a sum of money double in 8 years.

    • 12.50%

    • 13.50%

    • 11.50%

    • 14.50%

    Correct Answer
    A. 12.50%
    Explanation
    If a sum of money doubles in 8 years, it means that the amount of money will increase by 100% in 8 years. To find the rate percent per annum, we can divide 100% by 8 years, which gives us 12.50%. Therefore, the correct answer is 12.50%.

    Rate this question:

  • 3. 
    Which one will replace the question mark ? - ProProfs

    Which one will replace the question mark ?

    • 41

    • 64

    • 35

    • 61

    Correct Answer
    A. 64
    Explanation
    The numbers in the sequence are formed by taking the square of the first digit and concatenating it with the second digit. For example, 41 is formed by taking the square of 4 (which is 16) and concatenating it with 1. Similarly, 35 is formed by taking the square of 3 (which is 9) and concatenating it with 5. Therefore, the number that will replace the question mark is 64, which is formed by taking the square of 6 (which is 36) and concatenating it with 4.

    Rate this question:

  • 4. 

    The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the

    • Seeback effect

    • Ferranti effect

    • Raman effect

    • None of these

    Correct Answer
    A. Ferranti effect
    Explanation
    The Ferranti effect refers to the phenomenon of a rise in voltage at the receiving end of an open-circuited or lightly loaded line. This effect occurs due to the reactive power consumption in the line, causing an increase in the voltage level. It is named after Sebastian Ferranti, an Italian engineer who first observed and studied this phenomenon. The other options, Seeback effect and Raman effect, are unrelated to the rise in voltage in open-circuited or lightly loaded lines.

    Rate this question:

  • 5. 

    Which of the following relays is used on long transmission lines ?

    • Impedance relay

    • Mho’s relay

    • Reactance relay

    • None of these

    Correct Answer
    A. Mho’s relay
    Explanation
    Mho's relay is used on long transmission lines because it is specifically designed to measure the impedance of the line. Impedance relay, as the name suggests, is also used for measuring impedance but it is not as suitable for long transmission lines as Mho's relay. Reactance relay, on the other hand, is used to measure reactance and is not designed for long transmission lines. Therefore, the correct answer is Mho's relay.

    Rate this question:

  • 6. 

    In case of static electric field Maxwell's divergence equation states that:

    • ∇ . E′ = 1/ρ

    • ∇ . E′ = ρ/ε0

    • ∇ . E′ = εr

    • ∇ . E′ = ρ

    Correct Answer
    A. ∇ . E′ = ρ/ε0
    Explanation
    The correct answer is ∇ . E' = ρ/ε0. This is the correct form of Maxwell's divergence equation in the case of a static electric field. It states that the divergence of the electric field E' is equal to the charge density ρ divided by the permittivity of free space ε0. This equation relates the distribution of electric charges to the behavior of the electric field in a static situation.

    Rate this question:

  • 7. 

    Given a unity feedback control system with (Gs)=K/s (s+ 4) the value of K for a damping ratio of 0.5 is

    • 1

    • 16

    • 32

    • 64

    Correct Answer
    A. 16
    Explanation
    The damping ratio of a control system determines the response of the system to disturbances. A damping ratio of 0.5 indicates a moderately damped system. In this case, the transfer function of the system is given as Gs = K/s(s+4). To find the value of K for a damping ratio of 0.5, we need to calculate the value of K that results in a damping ratio of 0.5 when substituted into the transfer function. By analyzing the transfer function, we can see that K=16 results in a damping ratio of 0.5.

    Rate this question:

  • 8. 

    The LVDT is primarily used for the measurement of

    • Displacement

    • Velocity

    • Acceleration

    • Humidity

    Correct Answer
    A. Displacement
    Explanation
    The LVDT, or Linear Variable Differential Transformer, is a type of sensor that is specifically designed for measuring displacement. It consists of a primary coil and two secondary coils, and as the core of the LVDT moves, it induces a voltage in the secondary coils that is proportional to the displacement. This makes it an ideal choice for applications where accurate displacement measurements are required, such as in industrial automation, robotics, and quality control systems. Therefore, the LVDT is primarily used for the measurement of displacement.

    Rate this question:

  • 9. 

    अभिलाषा शब्द का उपयुक्त पर्यायवाची चुनिए.

    • विकार

    • आकांक्षा

    • अहंकार

    • हार्दिक

    Correct Answer
    A. आकांक्षा
  • 10. 

    A 50 Hz, 3-phase induction motor has a full load speed of 1440 r.p.m. The number of poles of the motor are

    • 4

    • 6

    • 8

    • 12

    Correct Answer
    A. 4
    Explanation
    The speed of a 3-phase induction motor is given by the formula Ns = (120*f)/P, where Ns is the synchronous speed, f is the frequency of the supply, and P is the number of poles. In this case, the synchronous speed is 1500 rpm (since 50 Hz corresponds to 1500 rpm), and the full load speed is 1440 rpm. Since the full load speed is less than the synchronous speed, the motor is running at a slip. The slip is given by the formula S = (Ns - Nf)/Ns, where Nf is the full load speed. By substituting the given values, we can calculate the slip as (1500-1440)/1500 = 0.04 or 4%. The slip is directly proportional to the number of poles. Since the slip is 4%, the number of poles must be 4.

    Rate this question:

  • 11. 

    The “Superposition theorem” is essentially based on the concept of

    • Duality

    • Linearity.

    • Reciprocity.

    • Non-linearity.

    Correct Answer
    A. Linearity.
    Explanation
    The "Superposition theorem" is a principle used in electrical engineering to analyze linear circuits. It states that in a linear circuit, the response (current or voltage) at any point can be determined by adding the responses caused by each individual source acting alone, while the other sources are turned off. This principle relies on the concept of linearity, which means that the circuit components and sources behave in a proportional manner. Therefore, the correct answer is linearity.

    Rate this question:

  • 12. 

    Under the condition of resonance, RLC series circuit behaves as a,

    • Purely resistive circuit.

    • Purely inductive circuit.

    • Capacitive circuit.

    • Reactive circuit.

    Correct Answer
    A. Purely resistive circuit.
    Explanation
    Under the condition of resonance, the RLC series circuit behaves as a purely resistive circuit. This means that the circuit has no reactance (inductive or capacitive) and only offers resistance to the flow of current. At resonance, the inductive reactance cancels out the capacitive reactance, leaving only the resistance. This occurs when the frequency of the applied voltage is equal to the natural frequency of the circuit. In this state, the circuit is most efficient in transferring energy and the current and voltage are in phase with each other.

    Rate this question:

  • 13. 

    In a crystal, an atom vibrates at a frequency determined by

    • The heat content of the crystal

    • The temperature of the crystal

    • The stiffness of the bonds it makes with neighbors

    • None of these

    Correct Answer
    A. The stiffness of the bonds it makes with neighbors
    Explanation
    The correct answer is the stiffness of the bonds it makes with neighbors. In a crystal, the atoms are arranged in a regular pattern and are connected to each other through bonds. These bonds can be thought of as springs, and the stiffness of these springs determines the frequency at which the atoms vibrate. The stiffer the bonds, the higher the frequency of vibration. The heat content and temperature of the crystal can affect the amplitude of the vibrations, but they do not determine the frequency. Therefore, the correct answer is the stiffness of the bonds.

    Rate this question:

  • 14. 

    Which of the following generating stations has the minimum running cost?

    • Hydro-electric station.

    • Nuclear power station.

    • Thermal power station

    • Diesel power plant.

    Correct Answer
    A. Hydro-electric station.
    Explanation
    The hydro-electric station has the minimum running cost because it utilizes the natural flow of water to generate electricity, which is a renewable and abundant resource. Unlike nuclear power stations, thermal power stations, and diesel power plants, hydro-electric stations do not require the ongoing cost of fuel or maintenance associated with these other types of power generation. Additionally, hydro-electric stations have a longer lifespan and lower environmental impact compared to other generating stations.

    Rate this question:

  • 15. 

    From a point P on a level ground, the angle of elevation of the top tower is 30º. If the tower is 100 m high, the distance of point P from the foot of the tower is:

    • 149 m

    • 156 m

    • 173 m

    • 200 m

    Correct Answer
    A. 173 m
    Explanation
    Given that the angle of elevation of the top of the tower from point P is 30º and the height of the tower is 100 m, we can use trigonometry to find the distance of point P from the foot of the tower. The tangent of an angle is equal to the opposite side divided by the adjacent side. In this case, the opposite side is the height of the tower (100 m) and the adjacent side is the distance of point P from the foot of the tower (x m). Therefore, tan(30º) = 100/x. By solving for x, we find that x = 100/tan(30º) = 173 m. Therefore, the distance of point P from the foot of the tower is 173 m.

    Rate this question:

  • 16. 

    In a differential amplifier an ideal CMRR is

    • Infinity.

    • Zero

    • –1.

    • 1

    Correct Answer
    A. Infinity.
    Explanation
    The ideal CMRR (Common Mode Rejection Ratio) in a differential amplifier is infinity. CMRR is a measure of the amplifier's ability to reject common-mode signals, which are signals that appear equally on both inputs. An ideal differential amplifier should only amplify the difference between the two inputs and reject any common-mode signals completely. An infinite CMRR means that the amplifier can perfectly reject common-mode signals, resulting in no amplification of unwanted noise or interference.

    Rate this question:

  • 17. 

    How many comparators would a 12-bit flash ADC require?

    • 4000

    • 3095

    • 4095

    • 2512

    Correct Answer
    A. 4095
    Explanation
    A 12-bit flash ADC requires 2^12 - 1 comparators, where 2^12 represents the total number of possible digital output codes and the "- 1" accounts for the zero code. Therefore, the correct answer is 4095, as it represents the number of comparators required for a 12-bit flash ADC.

    Rate this question:

  • 18. 

    The transient voltage that appears across the contacts at the instant of arc extinction is called

    • Recovery voltage

    • Peak voltage.

    • Re striking voltage

    • Supply voltage

    Correct Answer
    A. Re striking voltage
    Explanation
    The transient voltage that appears across the contacts at the instant of arc extinction is called re-striking voltage. This voltage occurs when the arc is extinguished and the current flow is interrupted. It is a brief but high voltage spike that can occur due to the sudden collapse of the magnetic field around the contacts. This re-striking voltage can be dangerous and can cause damage to the contacts or surrounding equipment if not properly managed.

    Rate this question:

  • 19. 

    Which of the following states do not have tiger reserves in India

    • Kerala

    • Jammu and Kashmir

    • Uttarakhand

    • West Bengal

    Correct Answer
    A. Jammu and Kashmir
    Explanation
    Jammu and Kashmir does not have tiger reserves in India. This is because the state's geographical location and climate are not suitable for sustaining tiger populations. Tigers require dense forests and ample prey to survive, which are not abundant in Jammu and Kashmir. Therefore, the state does not have any designated tiger reserves.

    Rate this question:

  • 20. 

    The two windings of a transformer is

    • Conductively linked.

    • Inductively linked.

    • Not linked at all.

    • Electrically linked.

    Correct Answer
    A. Inductively linked.
    Explanation
    The two windings of a transformer are inductively linked because they are placed close to each other, allowing the magnetic field generated by one winding to induce a voltage in the other winding. This inductive coupling is what enables the transfer of energy from the primary winding to the secondary winding in a transformer.

    Rate this question:

  • 21. 

    The damping ratio of a system having the characteristic equation s²+2s +8 =0 is

    • 0.353

    • 0.330.

    • 0.3

    • 0.250.

    Correct Answer
    A. 0.353
    Explanation
    The damping ratio of a system can be determined by comparing the characteristic equation with the standard form of a second-order system. The standard form is s² + 2ζω_ns + ω_n² = 0, where ζ is the damping ratio and ω_n is the natural frequency.

    In this case, the characteristic equation is s² + 2s + 8 = 0, which can be rearranged to match the standard form by dividing through by 8. This gives us s²/8 + s/4 + 1 = 0.

    Comparing coefficients, we can see that 2ζω_n = 1/4. Since the natural frequency ω_n is not given, we cannot determine the exact value of the damping ratio ζ. Therefore, we cannot provide an explanation for the given correct answer.

    Rate this question:

  • 22. 

    A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?

    • 20 hours

    • 25 hours

    • 35 hours

    • Cannot be determined

    Correct Answer
    A. 35 hours
    Explanation
    Pipe A is the slowest among the three pipes. Since pipe B is twice as fast as A, it can fill the tank in half the time it takes for A. Similarly, pipe C, being twice as fast as B, can fill the tank in half the time it takes for B. Therefore, if pipe A takes x hours to fill the tank, pipe B will take x/2 hours, and pipe C will take (x/2)/2 = x/4 hours. Given that all three pipes working together can fill the tank in 5 hours, their combined rate is 1/5 of the tank per hour. Using this information, we can set up the equation (1/x) + (2/x) + (4/x) = 1/5 and solve for x. The solution is x = 35 hours, which means pipe A alone will take 35 hours to fill the tank.

    Rate this question:

  • 23. 

    125,80,45,20,?

    • 5

    • 8

    • 10

    • 12

    Correct Answer
    A. 5
    Explanation
    The given sequence follows a pattern of decreasing by 45, then 35, then 25, and finally 15. Therefore, the missing number in the sequence would be 5, as it decreases by 15 from the previous number 20.

    Rate this question:

  • 24. 

    Material which lack permanent magnetic dipoles are known as

    • Paramagnetic

    • Diamagnetic

    • Ferromagnetic

    • Ferrimagnetic

    Correct Answer
    A. Diamagnetic
    Explanation
    Materials that lack permanent magnetic dipoles are known as diamagnetic. Diamagnetic materials do not have an inherent magnetic field and are weakly repelled by a magnetic field. This is because the electrons in diamagnetic materials are paired and their magnetic moments cancel out. Therefore, when exposed to a magnetic field, diamagnetic materials generate a weak magnetic field in the opposite direction, causing them to be repelled.

    Rate this question:

  • 25. 

    The shunt admittance of a transmission line is given by

    • γ = R + jωL

    • γ = R - jωL

    • γ = G + jωC

    • γ = jωGC

    Correct Answer
    A. γ = G + jωC
    Explanation
    The given correct answer, γ = G + jωC, represents the shunt admittance of a transmission line. This equation includes the conductance (G) and the susceptance (jωC) terms. Conductance is a measure of how easily current can flow through a material, while susceptance represents the reactive component of the admittance. By adding these two terms together, we can calculate the shunt admittance of the transmission line.

    Rate this question:

  • 26. 

    A motor which can conveniently be operated at lagging as well as leading power factors is the

    • Squirrel cage induction motor.

    • Wound rotor induction motor.

    • Synchronous motor

    • DC shunt motor

    Correct Answer
    A. Synchronous motor
    Explanation
    A synchronous motor can conveniently be operated at both lagging and leading power factors. It has the ability to adjust its power factor by controlling the excitation current. By adjusting the excitation, the motor can either supply or absorb reactive power, allowing it to operate at different power factors. This makes the synchronous motor versatile and suitable for applications where power factor correction is required.

    Rate this question:

  • 27. 

    In a 3-phase synchronous motor

    • The speed of stator MMF is always more than that of rotor MMF

    • The speed of stator MMF is always less than that of rotor MMF.

    • The speed of stator MMF is synchronous speed while that of rotor MMF is zero.

    • Rotor and stator MMF are stationary with respect to each other

    Correct Answer
    A. Rotor and stator MMF are stationary with respect to each other
    Explanation
    The correct answer is that the rotor and stator MMF are stationary with respect to each other. This means that the magnetic fields generated by the rotor and stator do not move relative to each other. In a synchronous motor, the rotor rotates at the same speed as the rotating magnetic field produced by the stator. This allows the rotor to "synchronize" with the stator and maintain a constant speed.

    Rate this question:

  • 28. 

    Slip of the induction machine is 0.02 and the stator supply frequency is 50 Hz.What will be the frequency of the rotor induced emf?

    • 10 Hz.

    • 50 Hz.

    • 1 Hz.

    • 2500 Hz.

    Correct Answer
    A. 1 Hz.
    Explanation
    The slip of an induction machine is defined as the difference between the synchronous speed and the actual rotor speed divided by the synchronous speed. In this case, the slip is given as 0.02. The synchronous speed is directly proportional to the stator supply frequency, which is 50 Hz. Therefore, the rotor speed is 50 Hz * (1 - 0.02) = 49 Hz. The frequency of the rotor induced emf is equal to the rotor speed, which is 49 Hz. Therefore, the correct answer is 1 Hz.

    Rate this question:

  • 29. 

    CMOS logic has the property of

    • Increased capacitance and delay

    • Decreased area.

    • High noise margin

    • Low static power dissipation

    Correct Answer
    A. Low static power dissipation
    Explanation
    CMOS logic is known for its low static power dissipation. This means that when the circuit is in a stable state, minimal power is consumed. This is advantageous as it helps to conserve energy and reduce heat generation. Additionally, low static power dissipation allows for longer battery life in portable devices and helps to minimize power consumption in large-scale integrated circuits.

    Rate this question:

  • 30. 

    तुम्हारा परीक्षा में प्रथम आना तो ऐसा है जैसे–

    • ऊँट के मुँह में जीरा

    • घोड़े की बला तबेले के सिर

    • अंधे के हाथ बटेर लगना

    • अंधा क्या जाने बंसत की बहार

    Correct Answer
    A. अंधे के हाथ बटेर लगना
  • 31. 

    In a 3 – phase induction motor running at slip ‘s’ the mechanical power developed in terms of air gap power Pg is

    • ( s −1) Pg .

    • Pg/(1-s)

    • (1-s)Pg

    • S × Pg .

    Correct Answer
    A. (1-s)Pg
    Explanation
    The mechanical power developed in a 3-phase induction motor running at slip 's' is given by (1-s)Pg. This means that the mechanical power developed is equal to the air gap power Pg multiplied by (1-s). The term (1-s) represents the fraction of the air gap power that is converted into mechanical power, while the term Pg represents the total air gap power. Therefore, the correct answer is (1-s)Pg.

    Rate this question:

  • 32. 

    The input to a controller is

    • Sensed signal.

    • Desired variable value.

    • Error signal.

    • Servo-signal.

    Correct Answer
    A. Error signal.
    Explanation
    The input to a controller is the error signal. The error signal represents the difference between the desired variable value and the sensed signal. The controller uses this error signal to calculate the appropriate control action to minimize the error and bring the system closer to the desired variable value. The error signal is a crucial component in closed-loop control systems as it provides the necessary information for the controller to make adjustments and maintain system stability.

    Rate this question:

  • 33. 

    In an R – L –C circuit, the phase of the current with respect to the circuit voltage will be_________.

    • Leading.

    • Same.

    • Lagging.

    • Depends upon the value of Land C.

    Correct Answer
    A. Depends upon the value of Land C.
    Explanation
    The phase of the current with respect to the circuit voltage in an R – L – C circuit depends upon the values of inductance (L) and capacitance (C). If the circuit has a higher value of inductance, the current will lag behind the voltage, resulting in a lagging phase. On the other hand, if the circuit has a higher value of capacitance, the current will lead the voltage, resulting in a leading phase. Therefore, the phase of the current can vary depending on the values of L and C.

    Rate this question:

  • 34. 

    निम्नलिखित वाक्य त्रुटिपूर्ण अथवा त्रुटिहीन है. त्रुटिपूर्ण अंश का चयन कीजिए

    • मेरा भाई

    • जिसका शादी कल है

    • घर गया

    • कोई त्रुटि नहीं

    Correct Answer
    A. जिसका शादी कल है
    Explanation
    The correct answer is "जिसका शादी कल है" because it is the only part of the given sentence that is grammatically correct. The other parts of the sentence, "मेरा भाई" and "घर गया", are incomplete and do not form a complete sentence. The phrase "कोई त्रुटि नहीं" is grammatically correct but does not fit in the given context.

    Rate this question:

  • 35. 

    By which movement of Earth Day and Night occurs

    • Revolution

    • Rotation

    • Displacement

    • Refractions

    Correct Answer
    A. Rotation
    Explanation
    The correct answer is rotation. The movement of the Earth on its axis causes day and night to occur. As the Earth rotates, different parts of it are exposed to the Sun's light, creating the cycle of day and night. This rotation takes approximately 24 hours to complete, resulting in the familiar pattern of alternating periods of light and darkness.

    Rate this question:

  • 36. 

    When a low resistance is connected in parallel with a high resistance, the combined resistance is

    • Always more than the high resistance.

    • Always less than the low resistance.

    • Always between the high resistance & low resistance

    • Either lower or higher than low resistance depending on the value of high resistance.

    Correct Answer
    A. Always less than the low resistance.
    Explanation
    When a low resistance is connected in parallel with a high resistance, the combined resistance is always less than the low resistance. This is because in a parallel circuit, the total resistance decreases as more paths for the current to flow are added. The low resistance provides an additional path for the current to flow, resulting in a lower overall resistance compared to just the high resistance alone.

    Rate this question:

  • 37. 

    For a 3-bit flash ADC, the number of comparators required are

    • 5

    • 9

    • 7

    • 3

    Correct Answer
    A. 7
    Explanation
    A 3-bit flash ADC requires 2^3 = 8 voltage comparators to compare the input voltage with the reference voltages. However, one of the comparators is not needed as its output will always be the inverse of the most significant bit (MSB) comparator. Therefore, the number of comparators required is 8 - 1 = 7.

    Rate this question:

  • 38. 

    Two numbers are 131 ± 5 and 629 ± 3. The sum of the numbers with range of doubt is

    • 760 + 8

    • 760 ± 2

    • 760 - 8

    • 760 ± 8

    Correct Answer
    A. 760 ± 8
    Explanation
    The given question asks for the sum of two numbers, which are expressed as a range of doubt. The first number, 131 ± 5, means that the actual value could be 5 units higher or lower than 131. Similarly, the second number, 629 ± 3, means that the actual value could be 3 units higher or lower than 629. To find the sum of these numbers, we add the highest possible values and the lowest possible values. The highest sum would be (131 + 5) + (629 + 3) = 768, and the lowest sum would be (131 - 5) + (629 - 3) = 752. Therefore, the sum of the numbers with a range of doubt is 760 ± 8.

    Rate this question:

  • 39. 

    Two tailors X and Y are paid a total of Rs. 550 per week by their employer. If X is paid 120 percent of the sum paid to Y, how much is Y paid per week?

    • Rs. 200

    • Rs. 250

    • Rs. 300

    • None of these

    Correct Answer
    A. Rs. 250
    Explanation
    Let's assume that Y is paid Rs. X per week. According to the given information, X is paid 120% of Y. So, X = 1.2Y. The total amount paid to both X and Y is Rs. 550. Therefore, X + Y = 550. Substituting the value of X from the first equation into the second equation, we get 1.2Y + Y = 550. Simplifying this equation, we find that 2.2Y = 550, which means Y = 550/2.2 = 250. Hence, Y is paid Rs. 250 per week.

    Rate this question:

  • 40. 

    A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is:

    • 35.55 km/hr

    • 36 km/hr

    • 71.11 km/hr

    • 71 km/hr

    Correct Answer
    A. 71.11 km/hr
    Explanation
    The average speed for the first 320 km of the tour can be calculated by finding the total time taken to cover the distance and then dividing it by the total distance. The time taken to cover the first 160 km at 64 km/hr is 160/64 = 2.5 hours. The time taken to cover the next 160 km at 80 km/hr is 160/80 = 2 hours. Therefore, the total time taken to cover the first 320 km is 2.5 + 2 = 4.5 hours. The average speed is then calculated as 320/4.5 = 71.11 km/hr.

    Rate this question:

  • 41. 

    Ferroelectric materials are characterised by

    • Very high degree of polarisation.

    • A sharp dependence of polarisation on temperature.

    • Non-linear dependence of the charge Q on the applied voltage.

    • All these

    Correct Answer
    A. All these
    Explanation
    Ferroelectric materials are characterized by all of these properties. They have a very high degree of polarization, meaning their electric dipoles align in a specific direction. They also exhibit a sharp dependence of polarization on temperature, with changes in temperature affecting the alignment of the dipoles. Additionally, ferroelectric materials have a non-linear dependence of the charge Q on the applied voltage, meaning the charge does not increase linearly with voltage. Therefore, all of these properties are true for ferroelectric materials.

    Rate this question:

  • 42. 

    Equipotential surfaces about a point charge are in which one of the following forms?

    • Sphere

    • Planes

    • Cylinders

    • Cubes

    Correct Answer
    A. Sphere
    Explanation
    Equipotential surfaces about a point charge are in the form of spheres. This is because a point charge creates a radial electric field that is symmetrical in all directions. The equipotential surfaces represent points in space where the electric potential is the same. Since the electric field lines emanate radially from the point charge, the equipotential surfaces will also be spherical, with the point charge at the center. This is true for both positive and negative point charges.

    Rate this question:

  • 43. 

    The equation 2s ⁴+s ³ +3s²+ 5 s+ 10 =0 has roots in the left half of s–plane.

    • 1

    • 2

    • 3

    • 4

    Correct Answer
    A. 2
    Explanation
    The equation 2s⁴+s³+3s²+5s+10=0 has roots in the left half of the s-plane. This means that all the solutions for the equation have a real part that is negative or zero. The answer "2" suggests that the equation has two roots in the left half of the s-plane.

    Rate this question:

  • 44. 

    The demand factor for the electrical system is the ratio of

    • Maximum demand to connected load

    • Maximum demand to average load

    • Average power to maximum power

    • Relative power to total power

    Correct Answer
    A. Maximum demand to connected load
    Explanation
    The demand factor for the electrical system is the ratio of the maximum demand to the connected load. This means that it measures the peak power consumption in relation to the total power capacity of the system. By calculating this ratio, one can determine how efficiently the system is being utilized and whether it is operating within its capacity. A higher demand factor indicates that the system is being used more effectively, while a lower demand factor suggests that there is potential for increased power usage.

    Rate this question:

  • 45. 

    The intermediate frequency in a standard AM receiver is

    • 455 Hz

    • 455 kHz

    • 4.55 MHz.

    • None of these

    Correct Answer
    A. 455 kHz
    Explanation
    The intermediate frequency in a standard AM receiver is typically 455 kHz. This frequency is used to simplify the amplification and filtering process of the received signal. By converting the received signal to a fixed intermediate frequency, it becomes easier to amplify and filter out unwanted noise and interference. This allows for better signal quality and improved reception of the desired AM broadcast.

    Rate this question:

  • 46. 

    High voltage transmission lines use

    • Suspension insulators

    • Pin insulators

    • Strain insulators

    • Disc insulators

    Correct Answer
    A. Suspension insulators
    Explanation
    High voltage transmission lines use suspension insulators because they provide better mechanical strength and electrical insulation compared to other types of insulators. Suspension insulators are designed to hang the conductors from the tower, allowing them to withstand the heavy weight and tension. They also provide better protection against electrical leakage and flashovers, which can occur at high voltages. Therefore, suspension insulators are the most suitable choice for high voltage transmission lines to ensure safe and efficient power transmission.

    Rate this question:

  • 47. 

    Which award has been announced by the UP government for Sakshi Malik?

    • Ahilya Bai Award

    • UP Ratna Award

    • Bhagyashree Award

    • Rani Laxmi Bai Award

    Correct Answer
    A. Rani Laxmi Bai Award
    Explanation
    The correct answer is Rani Laxmi Bai Award. This award has been announced by the UP government for Sakshi Malik.

    Rate this question:

  • 48. 

    The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

    • 25% increase

    • 50% increase

    • 50% decrease

    • 75% decrease

    Correct Answer
    A. 50% increase
    Explanation
    When the length of a rectangle is halved and the breadth is tripled, the new length becomes 1/2 of the original length and the new breadth becomes 3 times the original breadth. The area of a rectangle is calculated by multiplying the length and breadth. Therefore, the new area can be calculated as (1/2) * (3 times the original breadth) = (3/2) * the original area. To find the percentage change in area, we can calculate the difference between the new area and the original area, which is (3/2) * the original area - the original area = (1/2) * the original area. This is equal to a 50% increase in the area.

    Rate this question:

  • 49. 

    Load factor is defined as the ratio of _________.

    • Average Demand / Max. Demand.

    • Max. Demand / Average Demand.

    • Average Demand / Connected load.

    • Connected load / Max. Demand.

    Correct Answer
    A. Average Demand / Max. Demand.
    Explanation
    The load factor is a measure of how efficiently a power system is being utilized. It is calculated by dividing the average demand by the maximum demand. This ratio provides insight into the average power usage compared to the maximum power demand. A higher load factor indicates a more consistent and efficient use of power, while a lower load factor suggests fluctuations and inefficiencies in power consumption. Therefore, the correct answer is Average Demand / Max. Demand.

    Rate this question:

Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 03, 2016
    Quiz Created by
    Allexam93
Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.