# High Frequency Response of the Differential Amplifiers MCQ’s

This set of Electronic Devices & Circuits Multiple Choice Questions & Answers (MCQs) focuses on “High Frequency Response of the Differential Amplifiers”.

1. What is the problem with a single operational high frequency response of differential amplifier?

a) High input resistance

b) Low input resistance

c) Low output resistance

d) High output resistance

2. What is the total voltage gain of a high frequency response of differential amplifier if the gain of first stage is 4.8 and the gain of the second stage is 1.2?

a) 6.75

b) 6.55

c) 5.76

d) 5.65

3. What is the voltage gain of a high frequency response of differential amplifier?

a) 1

b) 0

c) ∞

d) Cannot be determined

4. What is the total voltage gain of a high frequency response of differential amplifier if input of first stage is 50V and the output of the second stage is 100V?

a) 20

b) 0.2

c) 2.5

d) 2

5. How do we calculate the output voltage of a high frequency response of differential amplifier?

a) V_{O} = -A_{d} × V_{d} + A_{C} × V_{C}

b) V_{O} = -A_{d} × V_{d} – A_{C} × V_{C}

c) V_{O} = A_{d} × V_{d} + A_{C} × V_{C}

d) V_{O} = A_{d} × V_{d} – A_{C} × V_{C}

6. How many methods of coupling are used for a high frequency response of differential amplifier?

a) 3

b) 4

c) 2

d) 5

7. How is the voltage gain measured in a high frequency response of differential amplifier?

a) Volts

b) Ampere

c) Decibels

d) Dimensionless

8. What is the purpose of using a high frequency response of differential amplifier?

a) Increase voltage gain

b) Decrease voltage gain

c) Increase current gain

d) Decrease current gain

9. What is the total voltage gain of a high frequency response of differential amplifier if the gain of first stage is 10dB, gain of the second stage is 20dB and gain of third stage is 30dB?

a) 60.32dB

b) 50dB

c) 60dB

d) 50.32dB

10. The coupling device is essential for a high frequency response of differential amplifier.

a) True

b) False