A. c. voltage regulator only
B. c. voltage regulator only
C. both D.C and A.C voltage regulator
D. none of the above
✅ The correct answer is option C.
Electrical Engineering
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2. A sensitive galvanometer produces large deflection for a_______________?
A. small value of current
B. large value of current
C. large value of power
D. large value of voltage
✅ The correct answer is option A.
3. Which of the following motors are pre-ferred for overhead travelling cranes ?
A. Slow speed motors
B. Continuous duty motors
C. Short time rated motors
D. None of the above
✅ The correct answer is option C.
4. Commonly used standard capacitor is______________?
A. spherical type
B. concentric cylindrical type
C. electrostatic type
D. multilayer parallel plate type
✅ The correct answer is option B.
5. At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is_____________?
A. 6.02 dB
B. -6.02 dB
C. 12.04 dB
D. -12.04 dB
✅ The correct answer is option B.
6. In an unregulated power supply, if input a.c. voltage increases, the output voltage _______________?
A. Increases
B. Decreases
C. Remains the same
D. None of the above
✅ The correct answer is option A.
7. A VTVM is never used to measure ______________?
A. Voltage
B. Current
C. Resistance
D. None of the above
✅ The correct answer is option B.
8. For faithful amplification by a transistor circuit, the value of VCE should______________for silicon transistor?
A. Not fall below 1 V
B. Be zero
C. Be 0.2 V
D. None of the above
✅ The correct answer is option A.
9. The characteristics of drive for crane hoisting and lowering are which of the following ?
A. Precise control
B. Smooth movement
C. Fast speed control
D. All of the above
✅ The correct answer is option D.
10. The output stage of a multistage amplifier usually employs______________?
A. Push-pull amplifier
B. Preamplifier
C. Class A power amplifier
D. None of the above
✅ The correct answer is option A.