Category: Electrical Engineering Mcqs
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
For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?
A. 10 W
B. 4 W
C. 8 W
D. None of the above
Annual depreciation of the plant it proportional to the earning capacity of the plant vide
A. sinking fund depreciation
B. straight line depreciation
C. reducing balances depreciation
D. none of the above
Which D.C. motor has got maximum self relieving property ?
A. Series motor
B. Shunt motor
C. Cumulatively compounded motor
D. Differentially compounded motor
A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is______________?
A. 0.2 s
B. 0.4 s
C. 0.6 s
D. 0.8 s
The main constituent of permalloy is_____________?
A. cobalt
B. chromium
C. nickel
D. tungsten
Which of the following motors is preferred for boom hoist of a travelling crane ?
A. Single phase motor
B. Synchronous motor
C. A.C. slip ring motor
D. Ward-Leonard controlled D.C. shunt motor
The temperature, under thermal and electrical system analogy, is considered analogous to_______________?
A. voltage
B. current
C. capacitance
D. charge
F. none of the above
The power transmitted will be maximum when____________?
A. corona losses are minimum
B. reactance is high
C. sending end voltage is more
D. receiving end voltage is more
Which motor is preferred for use in mines where explosive gases exist ?
A. Air motor
B. Induction motor
C. D.C. shunt motor
D. Synchronous motor
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