A. One stable state
B. Two stable states
C. No stable state
D. None of the above
✅ The correct answer is option C.
Electrical Engineering MCQs
When drain voltage equals the pinch-off-voltage, then drain current ___________ with the increase in drain voltage?
A. decreases
B. increases
C. remains constant
D. none of the above
✅ The correct answer is option C.
Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is___________?
A. 900 μA
B. 9 mA
C. 90 mA
D. 800 μA
✅ The correct answer is option A.
The input impedance of a JFET is _____________that of an ordinary transistor?
A. equal to
B. less than
C. more than
D. none of the above
✅ The correct answer is option C.
An ideal regulated power supply is one which has voltage regulation of________________?
A. 0%
B. 5%
C. 10%
D. 1%
✅ The correct answer is option A.
The main disadvantage of a mechanical switch is that it_______________?
A. Is operated mechanically
B. Is costly
C. Has high inertia
D. None of the above
✅ The correct answer is option C.
A series resonant band-pass filter consists of a 2 mH coil, a 0.005 µF capacitor, and a 120 Ω resistor. The winding resistance of the coil is 12 Ω. The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (f0)?
A. 10.9 V
B. 1.09 V
C. 1.1 V
D. 12 V
✅ The correct answer is option A.
According to application, instruments are classified as_____________?
A. switch board
B. portable
C. both A. and B.
D. moving coil
✅ The correct answer is option C.
Which of the following properties a damping oil must possess ?
A. Must be a good insulator
B. Should be non-evaporating
C. Should not have corrosive action upon the metal of the vane
D. The viscosity of the oil should not change with the temperature
✅ The correct answer is option E.
In the zero signal conditions, a transistor sees _____________ load?
A. c.
B. c.
C. both d.c. and a.c.
D. none of the above
✅ The correct answer is option A.