A. 10 db
B. 20 db
C. 40 db
D. None of the above
✅ The correct answer is option B.
Electrical Engineering MCQs
The spring material used in a spring control device should have the following property?
A. Should be non-magnetic
B. Most be of low temperature co-efficient
C. Should have low specific resistance
D. Should not be subjected to fatigue
✅ The correct answer is option E.
In voltage divider bias, operating point is 3 V, 2 mA. If VCC = 9 V, RC = 2.2 kO, what is the value of RE ?
A. 2000 O
B. 1400 O
C. 800 O
D. 1600 O
✅ The correct answer is option C.
Transformer coupling can be used in______________amplifiers?
A. Either power or voltage
B. Only power
C. Only voltage
D. None of the above
✅ The correct answer is option A.
A class A power amplifier is sometimes called______________amplifier?
A. Symmetrical
B. Single-ended
C. Reciprocating
D. Differential
✅ The correct answer is option B.
Operating point represents__________________?
A. Values of IC and VCE when signal is applied
B. The magnitude of signal
C. Zero signal values of IC and VCE
D. None of the above
✅ The correct answer is option C.
Multi-layer helical windings are commonly used in the transformers as high voltage windings_______________?
A. upto 20 kV
B. upto 50 kV
C. upto 80 kV
D. for 110 kV and above
✅ The correct answer is option D.
Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is____________?
A. 138 Ω
B. 1,389 Ω
C. 5,700 Ω
D. 880 Ω
✅ The correct answer is option B.
The ratio of output impedance of a CE amplifier is _______________?
A. About 1
B. Low
C. High
D. Moderate
✅ The correct answer is option D.
If a multimeter has a sensitivity of 1000 O per volt and reads 50 V full scale, its internal resistance is _____________?
A. 20 kO
B. 50 kO
C. 10 kO
D. None of the above
✅ The correct answer is option B.