Transistor Biasing Quiz | Transistor Biasing Objective Type Questions and Answers
Questions
21
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 ?
Answer: 800 O
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23
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?
Answer: 8 V
24
A silicon transistor is biased with base resistor method. If ß=100, VBE =0.7 V, zero signal collector current IC = 1 mA and VCC = 6V , what is the value of the base resistor RB?
Answer: 530 kO
26
The value of stability factor for a base resistor bias is …………
Answer: (ß+1)
27
When the temperature changes, the operating point is shifted due to …….
Answer: Change in ICBO
29
The stabilisation of operating point in potential divider method is provided by ……….
Answer: RE consideration
31
If the value of collector current IC increases, then the value of VCE …………
Answer: Decreases
32
In the design of a biasing circuit, the value of collector load RC is determined by …………
Answer: VCE consideration
33
The stability factor of a collector feedback bias circuit is ……….. that of base resistor bias.
Answer: Less than
34
In a base resistor method, if the value of ß changes by 50, then collector current will change by a factor ………
Answer: 50
35
For germanium transistor amplifier, VCE should ………….. for faithful amplification
Answer: 2.5 times the rated value
36
The base resistor method is generally used in ………
Answer: Switching circuits
38
The purpose of resistance in the emitter circuit of a transistor amplifier is to ………….
Answer: Limit the change in emitter current
40
The disadvantage of voltage divider bias is that it has ………….
Answer: Many resistors
