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Online Tests of Electronics

Online Electronic Engineering Quiz

Engineers are the back bone of Pak Army because in any war situation, Engineers help Pak Army to keep on advancing to the difficult areas.

In Engineering branch, soldiers are also given training regarding electronics equipment for maintenance and smooth functioning of the defence.

If you are interested to join Pak Army, Navy or PAF as an Engineer in Engineering branch then you are at the right place for preparation of all intelligence and academic tests. Here, all types of tests pattern and procedure for online applying is given.

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Past papers of Electronic Engineers are given here to pass the initial tests of Pak Army, Nay and PAF commissioned branches Tests. Learn here about Intelligence Tests, Academic Tests & Interview questions with the whole procedure here at this page below.

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Check: Past Papers of Electronics MCQs for Initial Tests

Online Tests of Electronics

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Electronic Quiz

At parallel resonance, the phase angle between the applied voltage and circuit current is ____?

0°

180°

90°

None of the above

For highest power gain, one would use ______configuration?

None of the above

The base resistor method is generally used in _____?

Switching Circuits

None of the above

Rectifier circuits

Amplifier Circuits

A voltage divider consists of two 100 kΩ resistors and a 12 V source. What will the output voltage be if a load resistor of 1 MΩ is connected to the output?

6 V

0.57 V

5.7 V

12 V

Transistor biasing is done to keep _____in the circuit?

Proper alternating current

Collector current small

Proper direct current

The base current small

The zero signal IC is generally ____ mA in the initial stages of a transistor amplifier?

More than 10

When a transistor is driven to cut off, ideally the output is _____?

VCC/2

VCC/3

VCC

The leakage current in a silicon transistor is about______ the leakage current in a germanium transistor?

One tenth

One hundredth

One thousandth

One millionth

Transistor biasing represents ____ conditions?

D.C

Both A.C. and D.C

None of the above

A.C

If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is _____?

10 kΩ

20 kΩ

2 kΩ

5 kΩ

If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then A.C. load is_____?

RL + RC

RC || RL

RL – RC

The purpose of capacitors in a transistor amplifier is to_____?

Couple or bypass A.C. component

Provide biasing

Cool the transistor

Protect the transistor

In a CE amplifier, the phase difference between voltage across collector load RC and signal voltage is _____?

270°

180°

90°

0°

The ratio of output impedance of a CE amplifier is _____?

Low

High

Moderate

About 1

The dimensions of L/CR are that of ____?

Henry

Farad

Ohm

None of the above

In a certain low-pass filter, fc = 3.5 kHz. Its passband is____?

3.5 kHz

0 Hz to 3.5 kHz

7 kHz

0 Hz

If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is_____?

10V

100V

20V

A CE amplifier is also called ____ circuit?

Grounded emitter

Grounded base

None of the above

Grounded collector

If L/C ratio of a parallel LC circuit is increased, the Q of the circuit_____?

Remains the same

Is increased

Is decreased

None of the above

If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be_____?

Low

High

Very high

Moderate

The disadvantage of impedance matching is that it _____?

None of the above

Gives distorted output

Requires a transformer

Gives low power output

In a certain low-pass filter, fc = 3.5 kHz. Its pass-band is_____?

7 kHz

3.5 kHz

0 Hz

0 Hz to 3.5 kHz

The maximum efficiency of resistance loaded class A power amplifier is _____?

25%

30%

50%

A single stage transistor amplifier contains______ and associated circuitry?

Two transistors

None of the above

One transistor

Three transistor

In the D.C. equivalent circuit of a transistor amplifier, the capacitors are considered______?

Partially short

None of the above

Open

Short

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