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Online Electrical Engineering Test - Electrical Engineering Test - Random

Instruction:
  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20

Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.
1.
The number of millivolts in 0.06 kilovolts is
600 V
6,000 mV
60,000 mV
600,000 mV
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Quantities and Units
2.
Seven thousand volts can be expressed as
7 kV
7 MV
7 mV
either 7 kV or 7 mV
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Quantities and Units
3.
The maximum resistance value for a brown, red, yellow, gold resistor is
126,000
126,600
114,000
132,000
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Voltage, Current and Resistance
4.
For 12 V and 40 mA, the power is
480 mW
0.480 W
480,000 µW
all of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
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Learn more problems on : Energy and Power
5.
A resistor normally opens when it burns out.
True
False
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Energy and Power
6.
The total resistance for two resistors in parallel is equal to the sum of the two resistors.
True
False
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Parallel Circuits
7.
A voltage divider consists of two 68 k resistors and a 24 V source. The unknown output voltage is
12 V
24 V
0 V
6 V
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Series-Parallel Circuits
8.
A 2 RL is connected across a voltage source, VS, of 110 V. The source's internal resistance is 24 . What is the output voltage across the load?
8.5 V
85 V
0 V
110 V
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Circuit Theorems and Conversions
9.
An ideal voltage source has zero internal resistance.
True
False
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Circuit Theorems and Conversions
10.
The expansion method for evaluating determinants is
better than any other method
good for only one determinant
more flexible than the cofactor method
good for second- and third-order determinants
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Branch, Loop and Node Analyses
11.
If a conductor is moved back and forth at a constant rate in a constant magnetic field, the voltage in the conductor will reverse polarity.
True
False
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Correct Answer: Option
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Learn more problems on : Magnetism and Electromagnetism
12.
A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of
25 kHz
12 kHz
18 kHz
1.3 MHz
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Alternating Current and Voltage
13.
If the peak of a sine wave is 13 V, the peak-to-peak value is
6.5 V
13 V
26 V
none of the above
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Learn more problems on : Alternating Current and Voltage
14.
A 320 H coil is in series with a 3.3 k resistor. How long does it take for current to build up to its full value?
0.48 s
0.48 ms
0.48 s
48 s
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Inductors
15.
An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is
good
open
shorted
partly shorted
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(Not Answered)
Correct Answer: Option
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Learn more problems on : Inductors
16.
A reflective load is a load as it appears to the source in the primary of a transformer.
True
False
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Correct Answer: Option
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Learn more problems on : Transformers
17.
When the frequency of the voltage applied to a series RC circuit is increased, the phase angle
increases
decreases
remains the same
becomes erratic
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(Not Answered)
Correct Answer: Option
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Learn more problems on : RC Circuits
18.
A 6.8 k resistor, a 7 mH coil, and a 0.02 F capacitor are in parallel across a 17 kHz ac source. The coil's internal resistance, RW, is 30 . The equivalent parallel resistance, Rp(eq), is
1,878
18,780
18,750
626
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(Not Answered)
Correct Answer: Option
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Learn more problems on : RLC Circuits and Resonance
19.
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
12.2812.34°
12.5712.34°
9.9512.34°
12.6212.34°
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(Not Answered)
Correct Answer: Option
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Learn more problems on : RLC Circuits and Resonance
20.
The stator is the rotating assembly in a generator or motor.
True
False
Your Answer: Option
(Not Answered)
Correct Answer: Option
Explanation:
The two main parts of a generator or motor can be described in either mechanical or electrical terms:

Mechanical:

Rotor: The rotating part of an electrical machine
Stator: The stationary part of an electrical machine

Electrical:

Armature: The power-producing component of an electrical machine. In a generator, alternator, or dynamo the armature windings generate the electric current. The armature can be on either the rotor or the stator.
Field: The magnetic field component of an electrical machine. The magnetic field of the dynamo or alternator can be provided by either electromagnets or permanent magnets mounted on either the rotor or the stator.
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Learn more problems on : Three-Phase Systems in Power Applications
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