A. Is decreased
B. Is increased
C. Remains the same
D. None of the above
✅ The correct answer is option B.
Electrical Engineering MCQs
When a pure semiconductor is heated, its resistance_________________?
A. Goes up
B. Goes down
C. Remains the same
D. Can’t say
✅ The correct answer is option B.
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
✅ The correct answer is option B.
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
✅ The correct answer is option C.
Which of these is the best description for a Zener diode ?
A. It is a diode
B. It is a constant current device
C. It is a constant-voltage device
D. It works in the forward region
✅ The correct answer is option C.
As the junction temperature increases, the voltage breakdown point for Zener mechanism _______________?
A. Is increased
B. Is decreased
C. Remains the same
D. None of the above
✅ The correct answer is option B.
When a rectangular voltage waveform is applied to a capacitor, then the current waveform is ______________?
A. Rectangular
B. Sinusoidal
C. Sawtooth
D. Square
✅ The correct answer is option A.
A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are___________?
A. 2 V, 4 V
B. 2 V, 2 V
C. 2 V, 6 V
D. 4 V, 6 V
✅ The correct answer is option A.
A parallel resonant band-pass filter consists of a 6.8 Ω resistor in series with a parallel network made up of an 8 µH coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 Ω. What is the center frequency of the filter?
A. 5.14 MHz
B. 514 kHz
C. 5.03 MHz
D. 503 kHz
✅ The correct answer is option A.
The commercial sources of energy are____________?
A. solar, wind and biomass
B. fossil fuels, hydropower and nuclear energy
C. wood, animal wastes and agriculture wastes
D. none of the above
✅ The correct answer is option B.