# Transistor Biasing MCQ with Explanatory Answers

Electrical Engineering multiple choice questions on Transistor Biasing.

## Transistor biasing represents the use of which condition

Transistor biasing represents the use of:

1. AC conditions
2. DC conditions
3. Both of above
4. None of above

The terms biasing a transistor means the use of DC voltage for establishing the certain operating conditions in a transistor

## What does operating point or Q point represent in Transistor Bias

The operating point or Q point represents:

1. Peak values of the sine wave
2. Zero signal values of IC and VCE
3. Values at which IC is maximum and VCE is minimum
4. Values at which IC is minimum and VCE is maximum

Correct answer: 2. Zero signal values of IC and VCE

## Proper amplification of Silicon diode by transistor circuit

For proper amplification by a transistor circuit, what should be the value of VBE for a silicon diode should:

1. Be Zero
2. Be as low as possible
3. Not fall below 0.7 V
4. Be greater than 1.4 V and lesser than 2.8 V

Correct answer: 3. Not fall below 0.7 V

For proper amplification by a transistor circuit, what should be the value of VBE for a silicon diode should not fall below 0.7 V

## Which of the following is correct about operating point and the A.C load line

Which of the following is correct about operating point and the A.C load line:

1. The operating point lies on load line
2. The operating point doesn’t lie on load line
3. The operating point may or may not lie on load line

## Voltage Divider Bias Numerical Problem

In a voltage divider bias circuit following data is known:

VCC = 20 V; R1 = 5k ohm; R2 = 1k ohm; RC = 3.6k ohm; RE = 1k ohm

What is the value of emitter voltage:

1. 1.55 V
2. 2.63 V
3. 4.8 V
4. 5.55 V