WorksheetsMCQs on BJT Biasing Circuits - II
Total questions: 10
Worksheet time: 5mins
Which of the following is the most temperature-stable BJT biasing technique?
Fixed Bias
Collector to Base Bias
Voltage Divider Bias
Emitter Follower Bias
What is the primary advantage of voltage divider biasing?
It reduces power consumption
It minimizes the need for capacitors
It makes the Q-point independent of β
It increases current gain
In the exact analysis of voltage divider bias, what does Rth stand for?
Total Resistance across the collector
Resistance across emitter
Parallel combination of R1 and R2
Series combination of RC and RE
Which of the following parameters increases with an increase in temperature in a silicon transistor?
VBE
β
IB
VCC
What is the approximate condition for neglecting base current in voltage divider bias analysis?
β RE >> 10 R2
β RB >> 10 R2
β R1 << 10 R2
β RC >> R2
The base voltage VB in approximate analysis of voltage divider bias is given by:
VB = R1 * VCC / (R1 + R2)
VB = R2 * VCC / (R1 + R2)
VB = VCC / (R1 + R2)
VB = VBE + VE
Which equation represents the stability factor with respect to IC0 for fixed bias?
S = β
S = 1 + β
S = β / (1 + β)
S = IC / IB
Stability factor (S) with respect to IC0 in voltage divider bias improves when:
RB/RE is high
RB is very small
RE is increased
β is low
In the voltage divider bias circuit, if β varies, which parameter remains almost constant?
Base current IB
Collector current IC
VBE
VCC
The correct formula for approximate emitter current in voltage divider bias is:
IE = VE / RE
IE = (VCC - VE) / RE
IE = VBE / RB
IE = β * IB
