This set of Electronic Devices and Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Current Gain with Resistive Load”.
1. What type of amplifier is a current gain with resistive load amplifier?
a) Voltage amplifier
b) Wideband amplifier
c) Feedback amplifier
d) Power amplifier
View Answer
Explanation: The current gain with resistive load amplifier is one of the most noticeable feedback amplifiers. It provides a negative current feedback to the circuit. These type of amplifiers are usually used in the end stage or the last stage of a series of amplifiers.
2. How is the input impedance of a current gain with resistive load amplifier?
a) Irrelevant
b) Moderate
c) Low
d) High
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Explanation: The construction of a current gain with resistive load circuit are approximately similar to a normal amplifier. One of the most important differentiating feature of a current gain with resistive load circuit is its high input impedance.
3. How is the output impedance of a current gain with resistive load amplifier?
a) Irrelevant
b) Moderate
c) Low
d) High
View Answer
Explanation: The construction of a current gain with resistive load circuit are approximately similar to a normal amplifier. The low output impedance is one of the most prominent differentiating feature of a current gain with resistive load amplifier circuit.
4. How is the current gain of a current gain with resistive load amplifier?
a) Irrelevant
b) Moderate
c) Low
d) High
View Answer
Explanation: The construction of a current gain with resistive load circuit are approximately similar to a regular feedback amplifier. Nonetheless, one of the most striking differentiating feature of a current gain with resistive load circuit is its high current gain.
5. How is the power gain of a current gain with resistive load amplifier?
a) Irrelevant
b) Moderate
c) Low
d) High
View Answer
Explanation: One of the most significant difference between a normal amplifier and of a current gain with resistive load circuit is its high power gain. The construction of a current gain with resistive load circuit are approximately similar to a normal amplifier, however the resistive load provides high power gain.
6. What is the application of a current gain with resistive load amplifier?
a) Positive feedback
b) Voltage gain
c) Power gain
d) Impedance matching
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Explanation: The high input impedance along with low output impedance makes the current gain with resistive load amplifier ideal for impedance matching. Along with that, its key characteristics include a comparatively high current and power gain.
7. What type of negative feedback does the current gain with resistive load amplifier provide?
a) Voltage, current and power
b) Voltage
c) Current
d) Power
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Explanation: The current gain with resistive load configuration is prominently known for its feedback amplifier qualities. It is a negative feedback network that provides a negative feedback of current to the circuit. It is generally used in the last stage of an amplifying network.
8. What is the value of β in a current gain with resistive load amplifier if Vf = 12V and VO = 12V?
a) 1
b) 124
c) 1.24
d) 0.124
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Explanation: The value of β in a current gain with resistive load amplifier configuration can be calculated using β = Vf / VO. Given, Vf = 12V and VO = 12V:
β = Vf / VO = 12 / 12 = 1.
9. What is the voltage gain of a current gain with resistive load amplifier?
a) 1
b) β
c) ∞
d) 0
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Explanation: The voltage gain of a current gain with resistive load amplifier configuration is roughly equal to unity. AV is approximately equal to 1. Since this type of amplifier focuses more towards the current gain, the voltage gain is usually maintained at unity.
10. What is the other name for a current gain with resistive load amplifier configuration?
a) Common collector
b) Common base
c) Common emitter
d) Amplifier circuit
View Answer
Explanation: The current gain with resistive load circuit configuration is also known as the common collector configuration as it provides a high input impedance and a low output impedance. The current gain with resistive load circuit acts as a buffer stage, and in result is used in several circuits where there is a need to prevent the loading of a circuit.
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