Comprehension And Aptitude Skills Lab - End Assessment - Part A - Section - B

50 Questions | Attempts: 137
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  • 1/50 Questions

    Which of the following gates is universal gate?

    • NOT
    • OR
    • AND
    • NOR
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About This Quiz

This session carries 50 question to be answered in 60 minutes. Take time in answering.

Assessment Quizzes & Trivia

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  • 2. 

         A circuit whose output is proportional to the difference between the input signals is considered to be which type of amplifier?

    • Common-mode

    • Operational

    • Differential

    • Darlington

    Correct Answer
    A. Differential
  • 3. 

      Flapper nozzle is used in a/an __________ controller

    • Pneumatic

    • Electronic

    • Hydraulic

    • None of these

    Correct Answer
    A. Pneumatic
  • 4. 

      Thermal wells are used in the temperature measurement to

    • Reduce measuring lag

    • Increase the sensitivity

    • Guard against corrosive and oxidising action on thermocouple materials

    • Increase the fidelity

    Correct Answer
    A. Guard against corrosive and oxidising action on thermocouple materials
  • 5. 

    Maxwell bridge is used for measurement of 

    • frequency

    • Capacitance

    • Inductance

    • Resistance

    Correct Answer
    A. Inductance
  • 6. 

    The voltage follower has a

    • Closed-loop bandwidth of zero

    • Small open-loop voltage gain

    • Closed-loop voltage gain of unity

    • Large closed-loop output impedance

    Correct Answer
    A. Closed-loop voltage gain of unity
  • 7. 

    Response of a system to a sinusoidal input is called __________ response.

    • Frequency

    • Impulse

    • Unit step

    • None of these

    Correct Answer
    A. Frequency
  • 8. 

    Ohm’s law is not applicable to

    • Option 1

    • Semi-conductors

    • High currents

    • DC circuits

    Correct Answer
    A. Semi-conductors
  • 9. 

    Which is the octal form of the decimal number 29?

    • 29

    • 35

    • 10

    • 13

    Correct Answer
    A. 35
  • 10. 

    A negative gain margin expressed in decibels means a/an __________ system.

    • Critically damped

    • Stable

    • Unstable

    • None of these

    Correct Answer
    A. Unstable
  • 11. 

    An XOR gate produces output only when two inputs are

    • high

    • Low

    • equal

    • Different

    Correct Answer
    A. Different
  • 12. 

    Load cells are used for the measurement of

    • Velocity

    • Stress

    • Strain

    • Weight

    Correct Answer
    A. Weight
  • 13. 

    A TRIAC:

    • Can trigger only on positive gate voltages

    • Can trigger only on negative gate voltages

    • Can be triggered by either a positive or a negative gate voltage

    • Cannot be triggered with gate voltages

    Correct Answer
    A. Can be triggered by either a positive or a negative gate voltage
  • 14. 

    The closed loop pole of a stable second order system could be

    • Both real and positive

    • Complex conjugate with positive real parts

    • One real positive and the other real negative

    • Both real and negative

    Correct Answer
    A. Both real and positive
  • 15. 

    Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

    • Low thermal conductivity

    • Low electrical conductivity

    • Low flash point

    • High viscosity index

    Correct Answer
    A. Low electrical conductivity
  • 16. 

    In a DMA write operation the data is transferred  

    • From I/O to memory

    • From memory to I/O

    • From memory to memory

    • From I/O to I/O

    Correct Answer
    A. From I/O to memory
  • 17. 

    What is the moving part of a linear variable differential transformer?

    • Primary

    • Secondary

    • Diaphragm

    • Core

    Correct Answer
    A. Core
  • 18. 

     Op-amps used as high- and low-pass filter circuits employ which configuration?

    • Open-loop

    • Noninverting

    • Comparator

    • Inverting

    Correct Answer
    A. Inverting
  • 19. 

        An astable multivibrator is also known as a

    • One-shot multivibrator

    • Bistable multivibrator

    • Free-running multivibrator

    • Monostable multivibrator

    Correct Answer
    A. Free-running multivibrator
  • 20. 

    The ratio between differential gain and common-mode gain is called

    • Common-mode rejection

    • Differential-mode rejection

    • Differential-mode rejection

    • Phase

    Correct Answer
    A. Common-mode rejection
  • 21. 

    The resolution of an indicating instrument is

    • The smallest change in the output reading due to drifting of pointer

    • The smallest change in the applied stimulus that will indicate the detectable change in the reflection

    • The difference between various readings for the same applied stimulus

    • None of these

    Correct Answer
    A. The smallest change in the applied stimulus that will indicate the detectable change in the reflection
  • 22. 

      Psychrometer determines the

    • Humidity of gases

    • Moisture content of solids

    • Hygroscopic nature of solids

    • Water of crystallisation

    Correct Answer
    A. Humidity of gases
  • 23. 

     In a transistor, collector current is controlled by:

    • Base current

    • Collector voltage

    • Collector resistance

    • All

    Correct Answer
    A. Base current
  • 24. 

    Most important advantage of an IC is its Most important advantage of an IC is its 

    • Very low cost

    • Extremely high reliability

    • Extremely small size

    • Very small weight

    Correct Answer
    A. Extremely high reliability
  • 25. 

    Pick out the first order system from among the following.

    • Interacting system of two tanks in series

    • Non-interacting system of two tanks in series

    • Damped vibrator

    • Mercury in glass thermometer kept in boiling water

    Correct Answer
    A. Mercury in glass thermometer kept in boiling water
  • 26. 

    The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.

    • Platinum-platinum/rhodium

    • Chromel-alumel

    • Iron-constantan

    • None of these

    Correct Answer
    A. Iron-constantan
  • 27. 

          The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is

    • Ï€/12

    • 5Ï€/12

    • Ï€/6

    • Ï€/3

    Correct Answer
    A. 5Ï€/12
  • 28. 

     A noninverting closed-loop op-amp circuit generally has a gain factor

    • Of zero

    • Greater than one

    • Less than one

    • Equal to one

    Correct Answer
    A. Greater than one
  • 29. 

    When transistors are used in digital circuits they usually operate in the

    • Breakdown region

    • linear region

    • Saturation and cutoff regions

    • Active region

    Correct Answer
    A. Saturation and cutoff regions
  • 30. 

    Which of the following is not a differential pressure flow meter ?

    • Flow nozzle

    • Rotameter

    • Venturimeter

    • Orificemeter

    Correct Answer
    A. Rotameter
  • 31. 

       Pirani gauge is used for the measurement of

    • Liquid level under pressure

    • Liquid level at atmospheric pressure

    • High vacuum

    • Very high pressure

    Correct Answer
    A. High vacuum
  • 32. 

    Which of the following controllers has maximum offset ?

    • P-controller

    • P-I controller

    • P-D controller

    • P-I-D controller

    Correct Answer
    A. P-controller
  • 33. 

    What does a hall effect sensor sense?

    • Temperature

    • Moisture

    • Magnetic fields

    • Pressure

    Correct Answer
    A. Magnetic fields
  • 34. 

    Kelvin double bridge is best suited for the measurement of 

    • Inductance

    • Capacitance

    • Low resistance

    • High resistance

    Correct Answer
    A. Low resistance
  • 35. 

    Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature ?

    • Platinum-platinum + rhodium

    • Iron-constantan

    • Chromel-constantan

    • All will give the same output

    Correct Answer
    A. Chromel-constantan
  • 36. 

     A typical example of a physical system with under damped characteristic is a

    • Thermocouple kept immersed in a liquid filled thermowell

    • Spring loaded diaphragm valve.

    • U-tube manometer

    • CSTR with first order reaction

    Correct Answer
    A. Spring loaded diaphragm valve.
  • 37. 

     Working principle of radiation pyrometer is based on the

    • Kirchoffs law

    • Seebeck effect

    • Wien's law

    • Stafan-Boltzman law

    Correct Answer
    A. Stafan-Boltzman law
  • 38. 

    The SCR can be termed as

    • DC switch

    • AC switch

    • Square-wave switch

    • Either DC or AC switch

    Correct Answer
    A. DC switch
  • 39. 

    Bode diagram are generated from output response of the system subjected to which of the following input?

    • Impulse

    • Sinusoidal

    • Ramp

    • Step

    Correct Answer
    A. Sinusoidal
  • 40. 

        An ideal operational amplifier has

    • Infinite bandwidth

    • Infinite output impedance

    • Zero input impedance

    • All

    Correct Answer
    A. Infinite bandwidth
  • 41. 

    The amplitude ratio for the sinusoidal response of a __________ is 1.

    • First order system

    • Second order system

    • Transportation lag

    • None of these

    Correct Answer
    A. Transportation lag
  • 42. 

    Which of the following recorder gives slow response

    • X-Y recorder

    • Oscillographic

    • Galvanometric

    • Magnetic

    Correct Answer
    A. Galvanometric
  • 43. 

     Positioning controllers are used for

    • Temperature changes

    • Low loads

    • High loads

    • Flow rate changes

    Correct Answer
    A. High loads
  • 44. 

    Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference ?

    • Peltier effect

    • Seebeck effect

    • Thomson effect

    • None of these

    Correct Answer
    A. Thomson effect
  • 45. 

        Which of the following controllers has the least maximum deviation ?

    • P-controller

    • P-I controller

    • P-I-D controller

    • P-D controller

    Correct Answer
    A. P-D controller
  • 46. 

      Nichol’s chart deals with

    • frequency response values of controllers

    • Closed loop values Vs frequency response values

    • Closed loop values Vs open loop values

    • Open loop values Vs frequency response values

    Correct Answer
    A. Closed loop values Vs open loop values
  • 47. 

    Which instrument has the lowest resistance?

    • Voltmeter

    • Ammeter

    • Megger

    • Frequency meter

    Correct Answer
    A. Ammeter
  • 48. 

    A system with a double pole at the origin is unstable since the corresponding term in the time domain

    • Is a constant

    • Grows exponentially with time

    • Grows linearly with time

    • Decays linearly with time

    Correct Answer
    A. Grows linearly with time
  • 49. 

     On-off controllers are normally used for

    • Flow rate changes

    • Temperature changes

    • Low loads

    • None of these

    Correct Answer
    A. Low loads

Quiz Review Timeline (Updated): Oct 17, 2014 +

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

  • Current Version
  • Oct 17, 2014
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 16, 2014
    Quiz Created by
    Sivasu1708
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