MCQs of Bipolar junction transistors and its biasing (Basic Electronics - 3110016)

Basic Electronics (3110016) MCQs

MCQs of Bipolar junction transistors and its biasing

Showing 71 to 80 out of 117 Questions

71.

If the temperature increases, the value of V_BE _______.

(a)	Remains the same
(b)	Is increased
(c)	Is decreased
(d)	None of the above

72.

The stabilization of operating point in potential divider method is provided by _______.

(a)	R_E consideration
(b)	R_C consideration
(c)	V_CC consideration
(d)	None of the above

73.

The value of V_BE _________.

(a)	Depends upon I_C to moderate extent
(b)	Is almost independent of I_C
(c)	Is strongly dependent on I_C
(d)	None of the above

74.

When the temperature changes, the operating point shifted due to _______.

(a)	Change in I_CBO
(b)	Change in V_CC
(c)	Change in the value of circuit resistances
(d)	None of the above

75.

The value of stability factor for a base resistor bias is _______.

(a)	R_B (β + 1)
(b)	(β + 1) R_C
(c)	β + 1
(d)	1 –β

76.

In a practical biasing circuit, the value of R_E is about _______.

(a)	10 KΩ
(b)	1 MΩ
(c)	100 KΩ
(d)	800 Ω

77.

A silicon transistor is biased with base resistor method. If β = 100, V_BE = 0.7 V, zero signal collector current I_C = 1 mA and V_CC = 6 V, what is the value of base resistor R_B?

(a)	105 KΩ
(b)	530 KΩ
(c)	315 KΩ
(d)	None of the above

78.

In voltage divider bias, V_CC = 25 V; R1 = 10 KΩ; R2 = 2.2 KΩ; R_C = 3.6 KΩ and R_E = 1 KΩ. What is the emitter voltage?

(a)	6.7 V
(b)	5.3 V
(c)	4.9 V
(d)	3.8 V

79.

In voltage divider bias, V_CC = 25 V; R1 = 10 KΩ; R2 = 2.2 KΩ; R_C = 3.6 KΩ and R_E = 1 KΩ. What is the collector voltage?

(a)	12.3 V
(b)	14.8 V
(c)	7.6 V
(d)	9.7 V

80.

In voltage divider bias, operating point is 3 V, 2 mA. If V_CC = 9 V, R_C = 2.2 KΩ, what is the value of R_E?

(a)	2000 Ω
(b)	1400 Ω
(c)	800 Ω
(d)	1600 Ω

Showing 71 to 80 out of 117 Questions