Electrical Engineering Test - Random - Online Electrical Engineering Test

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Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
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Marks : 2/20

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Test Review : View answers and explanation for this test.

The quantity 43 × 10^-3 is the same as

0.043

0.430

430

43,000

[#]

The number 0.0003 multiplied by 10^-3 is

0.0000003

0.0003

3,000

[#]

The number 4,500,000 can be expressed as

4,500 × 10⁶

4.5 × 10⁶

4.5 × 10^-3

either 4,500 × 10⁴ or 4.5 × 10⁶

[#]

In 40 kW, there are

0.4 mW

40,000 W

400 W

5,000 W

[#]

If a 6 V and a 9 V source are connected series aiding, the total voltage is

6 V

9 V

3 V

15 V

[#]

In a series circuit, the individual powers are additive.

True

False

[#]

When an open circuit occurs in a parallel branch, the total resistance decreases.

True

False

[#]

Find the Norton circuit, that is, I_IN and R_N, for the circuit given below.

478 mA, 12.8

750 mA, 12.8

478 mA, 6.8

750 mA, 6.8

[#]

When a solenoid is activated, the force that moves the plunger is

an electromagnetic field

a permanent magnetic field

varying voltage

a steady current

[#]

10.

A magnetic field is made up of flux lines.

True

False

[#]

11.

The instantaneous value is the voltage or current value of a waveform at its peak.

True

False

[#]

12.

A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current

is increased

is decreased

does not change

momentarily goes to zero

[#]

13.

A 2 k

resistor is in series with a 0.015

F capacitor across a 15 kHz ac source. What is the magnitude of the total impedance and the phase angle?

73.4

and θ = –19.5°

707

and θ = –19.5°

2121

and θ = –19.5°

734

and θ = –38.9°

[#]

14.

Which of the following power factors results in less energy loss in an RL circuit?

0.8

0.4

0.2

[#]

15.

A resonant circuit has a lower critical frequency of 7 kHz and an upper critical frequency of 13 kHz. The bandwidth of the circuit is

7 kHz

13 kHz

20 kHz

6 kHz

[#]

16.

A certain series RLC circuit with a 200 Hz, 15 V ac source has the following values: R = 12

, C = 80

F, and L = 10 mH. The total impedance, expressed in polar form, is

12.28

12.34°

12.57

12.34°

9.95

12.34°

12.62

12.34°

[#]

17.

An RC high-pass filter consists of an 820

resistor. What is the value of C so that X_c is ten times less than R at an input frequency of 12 kHz?

161

0.161

220

[#]

18.

The bandwidth of a resonant filter is determined by the quality factor (Q) of the circuit and the resonant frequency.

True

False

[#]

19.

In an RC low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.

True

False

[#]

20.

Referring to the give circuit, the output will

decay to zero at the end of the pulse

reach 6 V at the end of the pulse

reach 3.78 V at the end of the pulse

reach 5.16 V at the end of the pulse

[#]

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Online Electrical Engineering Test - Electrical Engineering Test - Random

Marks : 2/20

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