The Following Section consists of Multiple Choice Questions on Basic Electrical Engineering. Take the test on Basic Electrical Engineering problems.
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Multiple Choice Questions on Electrical Engineering Basic
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Question 1 of 20
1. Question
1 pointsResistance is measured in
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Question 2 of 20
2. Question
1 pointsThe number of microamperes in 2 milliamperes is
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Question 3 of 20
3. Question
1 pointsThe number of millivolts in 0.06 kilovolts is
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Question 4 of 20
4. Question
1 pointsEighteen thousand watts is the same as
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Question 5 of 20
5. Question
1 pointsWhen converting 0.16 mA to microamperes, the result is
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Question 6 of 20
6. Question
1 pointsWhich of the following is not an electrical quantity?
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Question 7 of 20
7. Question
1 pointsSeven thousand volts can be expressed as
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Question 8 of 20
8. Question
1 pointsFourteen milliamperes can be expressed as
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Question 9 of 20
9. Question
1 pointsVoltage is measured in
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Question 10 of 20
10. Question
1 pointsCurrent is measured in
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Question 11 of 20
11. Question
1 pointsThe formula to find I when the values of V and R are known is
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Question 12 of 20
12. Question
1 pointsA resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?
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Question 13 of 20
13. Question
1 pointsYou are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?
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Question 14 of 20
14. Question
1 pointsIf you wish to increase the amount of current in a resistor from 120 mA to 160 mA by changing the 24 V source, what should the new voltage setting be?
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Question 15 of 20
15. Question
1 pointsA 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is
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Question 16 of 20
16. Question
1 pointsA 5 mH, a 4.3 mH, and a 0.6 mH inductor are connected in parallel. The total inductance is
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Question 17 of 20
17. Question
1 pointsA sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
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Question 18 of 20
18. Question
1 pointsAn ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is
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Question 19 of 20
19. Question
1 pointsThe winding resistance of a coil can be increased by
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Question 20 of 20
20. Question
1 pointsThe current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is
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Multiple Choice Questions on Electrical Engineering Basic 2
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Question 1 of 20
1. Question
1 pointsWhen the current through an inductor decreases, the amount of energy stored in the electromagnetic field
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Question 2 of 20
2. Question
1 pointsThree 15 mH inductors are in series. The total inductance is
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Question 3 of 20
3. Question
1 pointsThe inductance of an ironcore coil decreases if
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Question 4 of 20
4. Question
1 pointsWhen the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field
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Question 5 of 20
5. Question
1 pointsIn the complex plane, the number 14 – j5 is located in the
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Question 6 of 20
6. Question
1 pointsPoint +4 on the complex plane is
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Question 7 of 20
7. Question
1 pointsA positive angle of 30° is equivalent to a negative angle of
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Question 8 of 20
8. Question
1 pointsA 6 kHz sinusoidal voltage is applied to a series RC circuit. The frequency of the voltage across the resistor is
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Question 9 of 20
9. Question
1 pointsThe voltages in Problem 4 are measured at a certain frequency. To make the capacitor voltage greater than the resistor voltage, the frequency
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Question 10 of 20
10. Question
1 pointsIn the complex plane, the number 4 + j3 is located in the
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Question 11 of 20
11. Question
1 pointsIn a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is
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Question 12 of 20
12. Question
1 pointsWhat is the angular difference between +j4 and –j4?
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Question 13 of 20
13. Question
1 pointsWhen the frequency of the voltage applied to a series RC circuit is increased, the phase angle
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Question 14 of 20
14. Question
1 pointsIn a series RC circuit, when the frequency and the resistance are halved, the impedance
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Question 15 of 20
15. Question
1 pointsWhen the frequency of the voltage applied to a series RC circuit is decreased, the impedance
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Question 16 of 20
16. Question
1 pointsIn a threephase system, the voltages are separated by
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Question 17 of 20
17. Question
1 pointsIn a threephase system, when the loads are perfectly balanced, the neutral current is
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Question 18 of 20
18. Question
1 pointsIn a certain threewire Yconnected generator, the phase voltages are 2 kV. The magnitudes of the line voltages are
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Question 19 of 20
19. Question
1 pointsIn a YY source/load configuration, the
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Question 20 of 20
20. Question
1 pointsIn a Yconnected circuit, the magnitude of each line current is
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Multiple Choice Questions on Electrical Engineering Basic 3
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Question 1 of 20
1. Question
1 pointsIn a Yconnected circuit, the magnitude of each line current is
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Question 2 of 20
2. Question
1 pointsA constant load power means a uniform conversion of
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Question 3 of 20
3. Question
1 pointsReferring to Problem 3, the total copper cross section must handle
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Question 4 of 20
4. Question
1 pointsPolyphase generators produce simultaneous multiple sinusoidal voltages that are separated by
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Question 5 of 20
5. Question
1 pointsIn a balanced threephase load, each phase has
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Question 6 of 20
6. Question
1 pointsIn a certain YY system, the source phase currents each have a magnitude of 9 A. The magnitude of each load current for a balanced load condition is
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Question 7 of 20
7. Question
1 pointsThe most common type of ac motor is the
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Question 8 of 20
8. Question
1 pointsThe voltages in Problem 5 are measured at a certain frequency. To make the resistor voltage less than the inductor voltage, the frequency is
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Question 9 of 20
9. Question
1 pointsIn a series RL circuit, 12 V rms is measured across the resistor, and 14 V rms is measured across the inductor. The peak value of the source voltage is
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Question 10 of 20
10. Question
1 pointsTo increase the current in a series RL circuit, the frequency
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Question 11 of 20
11. Question
1 pointsWhen the frequency is decreased, the impedance of a parallel RL circuit
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Question 12 of 20
12. Question
1 pointsWhen the frequency of the voltage applied to a series RL circuit is decreased, the impedance
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Question 13 of 20
13. Question
1 pointsIn a parallel RL circuit, there are 3 A rms in the resistive branch and 3 A rms in the inductive branch. The total rms current is
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Question 14 of 20
14. Question
1 pointsWhen the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle
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Question 15 of 20
15. Question
1 pointsWhich of the following power factors results in less energy loss in an RL circuit?
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Question 16 of 20
16. Question
1 pointsIf a load is purely inductive and the reactive power is 12 VAR, the apparent power is
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Question 17 of 20
17. Question
1 pointsIf the frequency is halved and the resistance is doubled, the impedance of a series RL circuit
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Question 18 of 20
18. Question
1 pointsWhen a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to
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Question 19 of 20
19. Question
1 pointsWith an RL integrator, at the instant of the rising pulse edge,
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Question 20 of 20
20. Question
1 pointsWhen a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to
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Multiple Choice Questions on Electrical Engineering Basic 4
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Question 1 of 20
1. Question
1 pointsA steadystate condition is reached when
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Question 2 of 20
2. Question
1 pointsTo understand how the output voltage is shaped by a differentiator, you must consider
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Question 3 of 20
3. Question
1 pointsIf the capacitor in an integrator becomes leaky,
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Question 4 of 20
4. Question
1 pointsAn RC differentiator acts as a
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Question 5 of 20
5. Question
1 pointsIn an RL differentiator, when the input pulse goes from its low level to its high level,
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Question 6 of 20
6. Question
1 pointsIn an RC differentiator, responding to repetitive pulses, the average value of the output
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Question 7 of 20
7. Question
1 pointsThe output of an RC integrator is taken across the
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Question 8 of 20
8. Question
1 pointsIn an RC differentiator, the sum of the capacitor voltage and the resistor voltage at any instant
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Question 9 of 20
9. Question
1 pointsWhen a 24 V input pulse with a width equal to five time constants is applied to an RC integrator, the capacitor charges to
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Question 10 of 20
10. Question
1 pointsIf the RC time constant of an integrator is increased, as the time constant is increased
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Question 11 of 20
11. Question
1 pointsIf a periodic pulse waveform has a pulse width and the time between pulses each equal to or greater than five time constants, the capacitor will
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Question 12 of 20
12. Question
1 pointsIn electronic systems, repetitivepulse waveforms are encountered
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Question 13 of 20
13. Question
1 pointsIn an RC differentiator, the capacitor
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Question 14 of 20
14. Question
1 pointsWhen the pointer of an analog ohmmeter reads close to zero, the resistor being measured is
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Question 15 of 20
15. Question
1 pointsIn 0.025 W, there are
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Question 16 of 20
16. Question
1 pointsA certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatthours of energy does it consume?
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Question 17 of 20
17. Question
1 pointsA power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is
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Question 18 of 20
18. Question
1 pointsA given power supply is capable of providing 6 A for 3.5 h. Its amperehour rating is
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Question 19 of 20
19. Question
1 pointsAt the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power?
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Question 20 of 20
20. Question
1 pointsIf you used 400 W of power for 30 h, you have used
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