Online Quiz - By Ecea
Make your brain work on a perfect blend of electronics and general knowledge
- 1.A(n) ________ is the smallest component of every element.
- 2.The relation of the voltage across an inductor to its current is described as
- A.
A. leading the current by 90 degrees
- B.
B. lagging the current by 90 degrees
- C.
C. leading the current by 180 degrees
- D.
D. in phase with the current
- 3.Materials with permeabilities slightly less than that of free space are referred to as
- A.
A. Diamagnetic
- B.
B. Ferromagnetic
- C.
C. Non-magnetic
- D.
D. Paramagnetic
- 4.Inserting a soft iron core into a coil has what effect on the inductance of the coil?
- A.
A. Increase inductance
- B.
B. Decrease inductance
- C.
C. Does not affect the inductance
- D.
D. None of these
- 5.The natural magnet refers to
- A.
A. Steel
- B.
B. Soft iron c. Magnesia b. Soft iron c. Magnesia b. Soft iron
- C.
C. Magnesia
- D.
D. Lodestone
- 6.A battery with a rating of 9 volts has an internal resistance of 20 ohms, what is the expected resistance of the bulb that is connected across the battery to attain a maximum power transfer?
- A.
A. 20 ohms
- B.
B. 10 ohms
- C.
C. 5 ohms
- D.
D. 2 ohms
- 7.The reciprocal of capacitance is called________(
- A.
A. Elastance
- B.
B. Permitivitty
- C.
C. Permeability
- D.
D. Conductance
- 8.Which of the following cannot be included in a loop of Kirchhoff’s Voltage law
- A.
A. Current sources
- B.
B. Voltage sources
- C.
C. Resistance
- D.
D. Reactance
- 9.Find the phase angle between the voltage across through the circuit when XC is 25 ohms, R is 100 ohms and XL is 50 ohms.
- A.
A. 76 degrees with voltage leading the current
- B.
B. 14 degrees with the voltage lagging the current
- C.
C. 14 degrees with the voltage leading the current
- D.
D. 76 degrees with the voltage lagging the current
- 10.The all-pass filter is sometimes called a _____
- A.
A. Tow Tomas filter
- B.
B. Delay equalizer
- C.
C. KHN filter
- D.
D. State-variable filter
- 11.A series connected circuit consists of 3 loads and consume a total power of 50 Watts. It was reconfigured such that 2 are in parallel and the other load is in series with the combination. What is the expected power to be consumed then?
- A.
A. 50 Watts
- B.
B. 25 Watts
- C.
C 75 watts
- D.
D. 45 watts
- 12.Highest operating frequency can be expected in case of
- A.
A. bipolar transistor
- B.
B. JFET
- C.
C. MOSFET
- D.
D. IGFET
- 13.If the gain of an amplifier without feedback is 10 and with negative feedback is 8, then the feedback fraction is
- A.
A. 0.025
- B.
B. 0.9
- C.
C. 0.8
- D.
D. 0.225
- 14.______is used for counting of binary information.
- A.
A. clamper circuit
- B.
B. Schmitt trigger
- C.
C. bistable vibrator
- D.
D. monostable vibrator
- 15.. A 33-kohm resistor is connected in series with a parallel combination made up of 56-kohm resistor and a 7.8-kohm resistor. What is the total combined resistance of the three resistors?
- A.
A. 39067 ohms
- B.
B. 49069 ohms
- C.
C. 63769 ohms
- D.
D. 95000 ohms
- 16.The kind of oscillator found in an electronic wristwatch is the
- A.
A. Armstrong
- B.
B. Clapp
- C.
C. Colpitts
- D.
D. Quartz crystal
- 17.A 220-volt, 60Hz is driving a series RL circuit. Determine the current if R = 100 ohms and 20 mH inductance
- A.
A. 2.2A(lagging)
- B.
B. 2.0 A(lagging)
- C.
C. 2.2 A(leading)
- D.
D. 2.0 A(leading)
- 18.Capactors are a type of battery?
- A.
Yes it can be used as a Battery
- B.
No it only holds a small charge
- C.
It is nothing like a Battery
- 19.What is the standard operating level of professional audio equipment?
- A.
+10 dBV
- B.
+4 dBu
- C.
-10 dBV
- D.
-20 dBSPL
- 20.Convert 1110101 binary to octal.
- A.
125
- B.
79
- C.
165
- 21.Convert 451 decimal to octal.
- A.
443
- B.
703
- C.
112
- 22.What is the legendary Argentianen Football player Maradona's last name
- A.
Wayne
- B.
Diego
- C.
Carlos
- D.
Pablo
- E.
Chicken
- 23.Which of the following is not a UNO Agency?
- A.
International Labour Organization
- B.
International Monetary Fund
- C.
Food and Agricultural Organization
- D.
International Postal Union
- 24.The size of screwdriver is determined by the shank
- A.
Length.
- B.
Weight.
- C.
Temper.
- D.
Width.
- 25.Which Latin name of a constellation is not paired with an English version?
- A.
Aries - ram
- B.
Cancer - crab
- C.
Draco - dragon
- D.
Sagittarius - swan
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