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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The number 4.4 × 10⁶ ohms expressed using a metric prefix is

4 k

4.4 k

4 M

4.4 M

[#]

How many watt-hours represent 65 W used for 18 h?

11.7 Wh

1,170 Wh

11,700 Wh

117,000 Wh

[#]

A series circuit consists of three resistors. Two resistors are 1.2 k

each. The total resistance is 12 k

. The value of the third resistor

is 9,600

is 960

is 1.2 k

cannot be determined

[#]

The currents into a junction flow along two paths. One current is 4 A and the other is 3 A. The total current out of the junction is

1 A

7 A

unknown

the larger of the two

[#]

The parallel combination of a 6.8 k

resistor and a 10 k

resistor is in series with the parallel combination of a 2.2 k

resistor and a 1 k

resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are)

6.8 k

2.2 k

6.8 k

and 10 k

2.2 k

and 1 k

[#]

Second-order determinants are evaluated by subtracting the signed cross-products.

True

False

[#]

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

an electromagnetic field

a permanent magnetic field

varying voltage

a steady current

[#]

A capacitor of 0.02

F is larger than

0.000020 F

200,000 pF

2,000 pF

all of the above

[#]

An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is

good

open

shorted

partly shorted

[#]

10.

A transformer responds only to dc.

True

False

[#]

11.

If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit

doubles

halves

remains constant

cannot be determined without values

[#]

12.

Referring to Problem 8, the total current is

1.5 A

573 mA

5.73 A

1.19 A

[#]

13.

In a parallel RLC circuit, the smaller reactance determines the net reactance of the circuit.

True

False

[#]

14.

An RL high-pass filter consists of a 470

resistor and a 600 mH coil. The output is taken across the coil. The circuit's critical frequency is

125 Hz

1,250 Hz

564 Hz

5,644 Hz

[#]

15.

For the circuit given, determine the Thevenin voltage as seen by R_L.

0.574

16.7° V

5.74

16.7° V

0.574

–16.7° V

5.74

–16.7° V

[#]

16.

One circuit is equivalent to another, in the context of Thevenin's theorem, when the circuits produce the same voltage.

True

False

[#]

17.

In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.

True

False

[#]

18.

What is the highest frequency contained in a pulse that has a rise and fall time equal to 10 microseconds (10

s)?

35 kHz

3.5 kHz

10 kHz

100 kHz

[#]

19.

A simple three-phase generator consists of three conductive loops separated by 120°.

True

False

[#]

20.

The stator is the rotating assembly in a generator or motor.

True

False

[#]

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Online Electrical Engineering Test - Electrical Engineering Test - Random

Marks : 2/20

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