Free Printable QUIZ 2: TRANSISTOR

Worksheets

QUIZ 2: TRANSISTOR

Total questions: 21

Worksheet time: 27mins

Name

Class

Date

Write your Matrix No.

4 lines

In the following circuit, R_G is replaced with a resistor double its original value (R'_G = 2R_G). The new I_D is

Unchanged

Undetermined, need additional information

Double the original I_D

Half the original I_D

Quadruple the original I_D

If the emitter-base junction is forward biased and the collector-base junction is reverse biased, what will be the region of operation for a transistor?

cut off region

saturated region

inverted region

active region

In the BJT amplifier circuit, I_C = 1 mA. Estimate the gain, A_v (with r_o is infinite).

$\approx100$

$\approx-6800$

$\approx-262$

Need additional information

A JFET is biased such that g_m = 1.14 mA/V at I_D = 1 mA. If V_GS changes with 1 mV, how much the drain current change?

$1.14\ A$

$1.14\ mA$

$1.14\ \mu A$

$1.14\ pA$

The Shockley equation for D-MOSFET is

I_D = (1 - V_GS/V_P)²

I_D = I_DSS(1 - V_GS/V_P)²

I_D = I_DSS(1 + V_GS/V_P)²

I_D = I_DSS(1 - V_GS/V_P)¹

Which of the following relation is true about gate current that can be applied to the DC analysis of all FET amplifiers?

I_G = I_D + I_S

I_G = I_S

I_G = I_D

I_G = 0

For a fixed bias configuration of JFET amplifier circuit the I_D = 1 mA with V_DD = 12 V, determine drain resistance (R_S) required if V_DS= 10 V.

1 KΩ

1.5 KΩ

2 KΩ

4 KΩ

If a MOSFET is to be used for an amplifier, then it must work in

Cut-off region

Triode region

Saturation region

Both cut-off and triode region can be used

10.

Define a transconductance, g_m.

Ratio of change in drain current to change in collector current

Ratio of change in drain current to change in gate to source voltage

Ratio of change in collector current to change in drain current

Ratio of change in collector current to change in gate to source voltage

11.

In an AC equivalent model for an FET circuit, the g_mV_GS represent for

A pure resistor

Voltage controlled current source

Current controlled current source

Voltage controlled voltage source

12.

Which of the following equation is a mathematical definition of g_m0for JFET?

g_m0 = I_DSS/V_p

g_m0 = 2I_DSS/|V_p|

g_m0 = I_DSS/5V_p

g_m0 = I_DSS/2V_p

13.

Find the value of g_m for JFET with g_mo = 4mS, V_p= 4V, V_GS= -0.5V?

1 mS

2 mS

3.5 mS

4.5 mS

14.

Which of the following term is NOT a terminal or region of a BJT?

Collector

Base

Emitter

Drain

15.

The correct relation between the BJT parameters $\alpha$ and $\beta$ are related by

$\beta=1-\frac{\alpha}{\alpha}$

$\beta=1+\frac{\alpha}{\alpha}$

$\alpha=\beta+\frac{1}{\beta}$

$\alpha=\frac{\beta}{\beta}+1$

16.

The feature of an equivalent model of a transistor is

it provides individual analysis for different configurations

ac analysis is not possible

it helps in dc analysis

it helps in quicker analysis

17.

Which of the following statement is true in construction of a BJT?

the collector is made physically larger than the emitter region

the collector collects minority charge carriers

the emitter supplies minority carriers

the collector dissipates lesser power

18.

The forward current gain amplification β is given by

I_B/I_E

I_E/I_B

I_B/I_C

I_C/I_B

19.

In Common-Emitter configuration of BJT, the voltage drop across 5 kΩ resistor connected in the collector circuit is 5 V. Find the value of I_B when β = 50.

0.01 mA

0.02 mA

0.03 mA

0.2 mA

20.

Where should be the Q-point set in order to make the transistor is proper biased for an amplifier?

Cut off

Active

Saturation

Breakdown

21.

For a voltage divider bias configuration of BJT amplifier, given that R₁ = R₂ = 10 kΩ, R_C= 4.7 kΩ, R_E = 1 kΩ and V_CC = 10 V, determine the value of collector current (I_C).

0.87 mA

1 mA

10 mA

1 A

100 %

QUIZ 2: TRANSISTOR

Total questions: 21

Worksheet time: 27mins

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