Test: Analog Electronics - 2


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20 Questions MCQ Test GATE ECE (Electronics) 2023 Mock Test Series | Test: Analog Electronics - 2

Test: Analog Electronics - 2 for Electronics and Communication Engineering (ECE) 2023 is part of GATE ECE (Electronics) 2023 Mock Test Series preparation. The Test: Analog Electronics - 2 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Analog Electronics - 2 MCQs are made for Electronics and Communication Engineering (ECE) 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Analog Electronics - 2 below.
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Test: Analog Electronics - 2 - Question 1

Shown below is a timer 555 IC circuit

Frequency of the waveform generated by the above circuit is 

Detailed Solution for Test: Analog Electronics - 2 - Question 1

Test: Analog Electronics - 2 - Question 2

The circuit shown in figure below represents:

Detailed Solution for Test: Analog Electronics - 2 - Question 2

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

*Answer can only contain numeric values
Test: Analog Electronics - 2 - Question 3

Consider the following feedback pair connection.

Collector current IC is ____________ mA.


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Test: Analog Electronics - 2 - 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?

Detailed Solution for Test: Analog Electronics - 2 - Question 4

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

Test: Analog Electronics - 2 - 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? 

Detailed Solution for Test: Analog Electronics - 2 - Question 5

Test: Analog Electronics - 2 - 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? 

Detailed Solution for Test: Analog Electronics - 2 - Question 6

Test: Analog Electronics - 2 - 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

Detailed Solution for Test: Analog Electronics - 2 - Question 7


Test: Analog Electronics - 2 - 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

Detailed Solution for Test: Analog Electronics - 2 - Question 8

Test: Analog Electronics - 2 - 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

Detailed Solution for Test: Analog Electronics - 2 - Question 9

Test: Analog Electronics - 2 - 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

Detailed Solution for Test: Analog Electronics - 2 - Question 10

Test: Analog Electronics - 2 - Question 11

The output voltage V0 for given circuit is

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*Answer can only contain numeric values
Test: Analog Electronics - 2 - 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.


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Test: Analog Electronics - 2 - 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.

Test: Analog Electronics - 2 - 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.

Detailed Solution for Test: Analog Electronics - 2 - Question 14

Z+Z+Z0 =0 ⇒ Z0 = - 2jX

Test: Analog Electronics - 2 - Question 15

Shown below is a network, in collector feedback mode. 

Q.

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

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Test: Analog Electronics - 2 - Question 16

Shown below is a network, in collector feedback mode. 

Q.

The current gain Ai is ≈ 

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Test: Analog Electronics - 2 - 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.

Detailed Solution for Test: Analog Electronics - 2 - Question 17

*Answer can only contain numeric values
Test: Analog Electronics - 2 - 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.


Detailed Solution for Test: Analog Electronics - 2 - Question 18

Test: Analog Electronics - 2 - Question 19

In voltage reference diodes:

Detailed Solution for Test: Analog Electronics - 2 - Question 19

Voltage reference diode means zener diode

Test: Analog Electronics - 2 - 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.

Detailed Solution for Test: Analog Electronics - 2 - Question 20

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