Electrical Engineering Mcqs

The biasing circuit has a stability factor of 50. If due to temperature change, ICBO changes by 1 µA, then IC will change by___________________?

(A) 100 µA
(B) 25 µA
(C) 20 µA
(D) 50 µA

Submitted By :Ali Uppal

If the maximum collector current due to signal alone is 3 mA, then zero signal collector current should be at least equal to___________________?

(A) 6 mA
(B) mA
(C) 3 mA
(D) 1 mA

Submitted By :Ali Uppal

The circuit that provides the best stabilization of operating point is___________________?

(A) Base resistor bias
(B) Collector feedback bias
(C) Potential divider bias
(D) None of the above

Submitted By :Ali Uppal

Transistor biasing is generally provided by a_______________?

(A) Biasing circuit
(B) Bias battery
(C) Diode
(D) None of the above

Submitted By :Ali Uppal

Transistor biasing is done to keep _____________in the circuit?

(A) Proper direct current
(B) Proper alternating current
(C) The base current small
(D) Collector current small

Submitted By :Ali Uppal

In a transistor amplifier circuit VCE = VCB +________________?

(A) VBE
(B) 2VBE
(C) 5 VBE
(D) None of the above

Submitted By :Ali Uppal

The stability factor of a collector feedback bias circuit is_______________ that of base resistor bias?

(A) The same as
(B) More than
(C) Less than
(D) None of the above

Submitted By :Ali Uppal

If the temperature increases, the value of VCE_________________?

(A) Remains the same
(B) Is increased
(C) Is decreased
(D) None of the above

Submitted By :Ali Uppal

The value of stability factor for a base resistor bias is________________?

(A) RB (ß+1)
(B) (ß+1)RC
(C) (ß+1)
(D) 1-ß

Submitted By :Ali Uppal

In voltage divider bias, VCC = 25 V; R1 = 10 kO; R2 = 2.2 V ; RC = 3.6 V and RE =1 kO. What is the emitter voltage?

(A) 7 V
(B) 3 V
(C) V
(D) 8 V

Submitted By :Ali Uppal

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