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Test: Analog Electronics - 2


20 Questions MCQ Test GATE ECE (Electronics) 2022 Mock Test Series | Test: Analog Electronics - 2


Description
This mock test of Test: Analog Electronics - 2 for Electronics and Communication Engineering (ECE) helps you for every Electronics and Communication Engineering (ECE) entrance exam. This contains 20 Multiple Choice Questions for Electronics and Communication Engineering (ECE) Test: Analog Electronics - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Analog Electronics - 2 quiz give you a good mix of easy questions and tough questions. Electronics and Communication Engineering (ECE) students definitely take this Test: Analog Electronics - 2 exercise for a better result in the exam. You can find other Test: Analog Electronics - 2 extra questions, long questions & short questions for Electronics and Communication Engineering (ECE) on EduRev as well by searching above.
QUESTION: 1

Shown below is a timer 555 IC circuit

Frequency of the waveform generated by the above circuit is 

Solution:

QUESTION: 2

The circuit shown in figure below represents:

Solution:

It is just by figure only. But one can also calculate transfer function.

*Answer can only contain numeric values
QUESTION: 3

Consider the following feedback pair connection.

Collector current IC is ____________ mA.


Solution:


QUESTION: 4

If for a given programmable OPAMP, G1 is the gain, when only S1 is closed and G2 is the gain when only S2 is closed, then relation between G1 & G2 is?
Solution:

When S1 is closed G1 = 1 it behaves like a voltage follower circuit. When S2 s closed

QUESTION: 5

For given RC − Phase shift oscillator, by use of BJT if R1 = R2 = 10k, Rc = 2K, R = 2K, C = 0.01 µF

Q. 

What is Minimum value of hfe for possible oscillation? 
Solution:

QUESTION: 6

For given RC − Phase shift oscillator, by use of BJT if R1 = R2 = 10k, Rc = 2K, R = 2K, C = 0.01 µF

Q. 

What is frequency of oscillation for circuit? 
Solution:

QUESTION: 7

For a given CE, amplifier if β = 100, IC = 1 mA, RS = 1 KΩ, Rc = 5 KΩ, Re = 200 Ω, hie = 2.5 K.

 

Q. 

Calculate value of voltage gain

Solution:


QUESTION: 8

For a given CE, amplifier if β = 100, IC = 1 mA, RS = 1 KΩ, Rc = 5 KΩ, Re = 200 Ω, hie = 2.5 K.

 

Q. 

Calculate input impedance seen by source
Solution:

QUESTION: 9

For the given FET, circuit if

RD = 20 kΩ rd = 50 kΩ
RS = 2 kΩ µ = 50

Q.

Calculate value of v0/vs
Solution:

QUESTION: 10

For the given FET, circuit if

RD = 20 kΩ rd = 50 kΩ
RS = 2 kΩ µ = 50

Q. 

Calculate value of output impedance
Solution:

QUESTION: 11

The output voltage V0 for given circuit is
Solution:

*Answer can only contain numeric values
QUESTION: 12

A MOSFET amplifier circuit is as shown below:

If device parameter K = 15 µA/V2, then value of Transconductance of MOSFET is _________ ms.

Solution:

QUESTION: 13

The 3-terminal linear voltage regulator is connected to a 10 ohm load resistor as shown in figure. If Vin is 10 volt, what is power dissipated in the Si transistor.
Solution:
QUESTION: 14

A sinusoidal oscillator is built using an amplifier of real gain A, infinite input impedance and feedback (β) network is shown in figure. If Z = jX, then what is the value of z0.
Solution:

Z+Z+Z0 =0 ⇒ Z0 = - 2jX

QUESTION: 15

Shown below is a network, in collector feedback mode. 

Q.

The voltage gain Av is ……………., Assume re = 

Solution:

QUESTION: 16

Shown below is a network, in collector feedback mode. 

Q.

The current gain Ai is ≈ 
Solution:

QUESTION: 17

A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.
Solution:

*Answer can only contain numeric values
QUESTION: 18

Numerical Anser type question

Q.

For a BJT, CE-mode, Base to emitter capacitance (Cπ) is 10 times the collector to base capacitance (Cµ). If transistor is biased at quiescent collector current ICQ = 1 mA, and its short circuit unity gain frequency is 0.909 M rad/sec, then the value of Cπ is _______ nF.

Solution:

QUESTION: 19

In voltage reference diodes:
Solution:

Voltage reference diode means zener diode

QUESTION: 20

What should be values of components R & R2 such that frequency of wein-bridge oscillator is 300 HZ, if C = 0.01 µF, R1 = 12 kΩ.
Solution:

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