Explore topic-wise MCQs in Electrical Engineering Questions.

This section includes 30 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering Questions knowledge and support exam preparation. Choose a topic below to get started.

1.

A CRO is used to measure _________________?
A. Voltage
B. Frequency
C. Phase
D. All of above
Answer» E.
Discussion
2.

The horizontal plates of a CRO are supplied with _____________ to observe the waveform of signal?
A. Sinusoidal wave
B. Cosine wave
C. Sawtooth wave
D. None of the above
Answer» D. None of the above
Discussion
3.

An ammeter has a resistance of G ohms and range of I amperes. The value of resistance required in parallel to convert it into an ammeter of range nI is______________?
A. nG
B. (n-1)G
C. G/(n-1)
D. G/n
Answer» D. G/n
Discussion
4.

A voltmeter has a resistance of G ohms and range V volts. The value of resistance required in series to convert it into voltmeter of range nV is________________?
A. nG
B. G/n
C. G/(n-1)
D. (n-1)G
Answer» E.
Discussion
5.

An ideal ammeter has ______________ resistance?
A. Low
B. Infinite
C. Zero
D. High
Answer» D. High
Discussion
6.

Which of the following is likely to have the largest resistance ?
A. Voltmeter of range 10 V
B. Moving coil galvanometer
C. Ammeter of range 1 A
D. A copper wire of length 1 m and diameter 3 mm
Answer» B. Moving coil galvanometer
Discussion
7.

The resistance of an ideal voltmeter is ______________?
A. Low
B. Infinite
C. Zero
D. High
Answer» C. Zero
Discussion
8.

To send 10% of the main current through a moving coil galvanometer of resistance 99 O the shunt required is______________?
A. 11 O
B. 9 O
C. 100 O
D. 9 O
Answer» B. 9 O
Discussion
9.

If 2% of the main current is to be passed through a galvanometer of resistance G, then resistance of the shunt required is ________________?
A. G/50
B. G/49
C. 49 G
D. 50 G
Answer» C. 49 G
Discussion
10.

If the full-scale deflection current of a multimeter is 50 µA, its sensitivity is ________________?
A. 10 kO/V
B. 100 kO/V
C. 50 kO/V
D. 20 kO/V
Answer» E.
Discussion
11.

A VTVM has_____________input resistance than that of a multi meter?
A. More
B. Less
C. Same
D. None of the above
Answer» B. Less
Discussion
12.

A voltmeter is connected in a _____________ with the circuit component across which potential difference is to be measured?
A. Parallel
B. Series
C. Series or parallel
D. None of the above
Answer» B. Series
Discussion
13.

A galvanometer in series with a high resistance is called_______________?
A. An ammeter
B. A voltmeter
C. A wattmeter
D. None of the above
Answer» C. A wattmeter
Discussion
14.

Two multimeters A and B have sensitivities of 10 kO/V and 30 kO/V respectively. Then ______________?
A. Multimeter A is more sensitive
B. Multimeter B is more sensitive
C. Both are equally sensitive
D. None of the above
Answer» C. Both are equally sensitive
Discussion
15.

What is the total resistance of a voltmeter on the 10 V range when the meter movement is rated for 50 µA of full-scale current ?
A. 10 kO
B. 20 kO
C. 200 kO
D. None of the above
Answer» D. None of the above
Discussion
16.

When an ammeter is inserted in the circuit, the circuit current will _____________?
A. Increase
B. Decrease
C. Remain the same
D. None of the above
Answer» C. Remain the same
Discussion
17.

A series ohmmeter circuit uses a 3 V battery and a 1 mA meter movement. What is the half-scale resistance for this movement ?
A. 3 kO
B. kO
C. kO
D. 6 kO
Answer» B. kO
Discussion
18.

A VTVM is never used to measure ______________?
A. Voltage
B. Current
C. Resistance
D. None of the above
Answer» C. Resistance
Discussion
19.

For display of signal pattern _____________voltage is applied to the horizontal plates of a CRO?
A. Sinusoidal
B. Rectangular
C. Sawtooth
D. None of the above
Answer» D. None of the above
Discussion
20.

A galvanometer of resistance G is shunted by a very small resistance S. The resistance of the resulting ammeter is ______________?
A. GS/(G+S)
B. G+S
C. G-S
D. None of the above
Answer» B. G+S
Discussion
21.

The sensitivity of a voltmeter which uses a 100 µA meter movement is ____________?
A. 1 kO/V
B. 10 kO/V
C. 5 kO/V
D. Data insufficient
Answer» C. 5 kO/V
Discussion
22.

The materil used to coat inside the face of CRT is ______________?
A. Carbon
B. Sulphur
C. Silicon
D. Phosphorous
Answer» E.
Discussion
23.

If a multimeter has a sensitivity of 1000 O per volt and reads 50 V full scale, its internal resistance is _____________?
A. 20 kO
B. 50 kO
C. 10 kO
D. None of the above
Answer» C. 10 kO
Discussion
24.

An ammeter is connected in __________ with the circuit element whose current we wish to measure?
A. Series
B. Parallel
C. Series or parallel
D. None of the above
Answer» B. Parallel
Discussion
25.

The sensitivity of a multimeter is given in _______________?
A. O
B. Amperes
C. kO/V
D. none of the above
Answer» D. none of the above
Discussion
26.

A voltmeter should have ____________resistance?
A. Zero
B. Very high
C. Very low
D. None of the above
Answer» C. Very low
Discussion
27.

An ammeter should have_____________ resistance?
A. Infinite
B. Very large
C. Very low
D. None of the above
Answer» D. None of the above
Discussion
28.

The most accurate device for measuring voltage is ____________?
A. Voltmeter
B. Multimeter
C. CRO
D. VTVM
Answer» D. VTVM
Discussion
29.

The input resistance of a VTVM is about ______________?
A. 1000 O
B. 10 kO
C. 20 kO
D. 10 MO
Answer» E.
Discussion
30.

If the negative potential on the control grid of CRT is increased, the intensity of spot _____________?
A. Is increased
B. Is decreased
C. Remains the same
D. None of the above
Answer» C. Remains the same
Discussion