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Test: Applications of Transistors - NEET MCQ


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10 Questions MCQ Test Topic-wise MCQ Tests for NEET - Test: Applications of Transistors

Test: Applications of Transistors for NEET 2024 is part of Topic-wise MCQ Tests for NEET preparation. The Test: Applications of Transistors questions and answers have been prepared according to the NEET exam syllabus.The Test: Applications of Transistors MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Applications of Transistors below.
Solutions of Test: Applications of Transistors questions in English are available as part of our Topic-wise MCQ Tests for NEET for NEET & Test: Applications of Transistors solutions in Hindi for Topic-wise MCQ Tests for NEET course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Applications of Transistors | 10 questions in 10 minutes | Mock test for NEET preparation | Free important questions MCQ to study Topic-wise MCQ Tests for NEET for NEET Exam | Download free PDF with solutions
Test: Applications of Transistors - Question 1
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Which of the following is not an ac parameter of a transistor?

Detailed Solution for Test: Applications of Transistors - Question 1

Input resistance, Output resistance and Current amplification factor are ac parameters of a transistor.

Test: Applications of Transistors - Question 2
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What is the voltage gain in a common emitter, where input resistance is 3Ω and the load resistance is 24Ω, β = 0.6​

Detailed Solution for Test: Applications of Transistors - Question 2

Voltage gain   =β× (Rc​​/Rb​)
Or,   Voltage gain =0.6×(24/3)​=4.8

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Test: Applications of Transistors - Question 3
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An oscillator is nothing but an amplifier with:

Detailed Solution for Test: Applications of Transistors - Question 3

An oscillator is an electronic circuit that converts DC from a power supply to an AC signal. An oscillator produces a periodic and oscillating signal. An oscillator is like an amplifier that gives positive feedback to the circuit. Positive feedback means that a portion of output is combined in phase with the input.

Test: Applications of Transistors - Question 4
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The output characteristic for a common emitter transistor is shown in the given figure.

Use the graph to find out the current amplification factor for the transistor when VCE = 2 V.​
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Test: Applications of Transistors - Question 5
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The power amplification for a common emitter (CE) amplifier is 22110. Its current gain is 67 and internal resistance is 200 ohm. What is the value of the of the output resistance?​
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Test: Applications of Transistors - Question 6
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A common emitter (CE) amplifier has a current gain of 49. The voltage drop across the collector terminal is 1.8 V. The collector resistance is 2.2 kilo-ohm. What is the base current in the CE amplifier?​
Detailed Solution for Test: Applications of Transistors - Question 6

Given,
Current gain(B)=4g
Voltage drop across terminal
Collector=1.8v
Collector resistance=2.2kΩ
Collector current=1.8/2.2x103
Current gain=△IC/△IB
△IB=1.8/2.2x103x4g
(D)△IB=1.67x10-5 A

Test: Applications of Transistors - Question 7
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Which of the following relations correctly shows the value of current amplification factor at a constant collector-emitter voltage?
Test: Applications of Transistors - Question 8
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Transistors are useful in equipments such as hearing aids and small radio receivers because transistors :
Detailed Solution for Test: Applications of Transistors - Question 8

Transistors consume very less energy and are therefore used in these equipment because these equipment don't have space for big power source.

Test: Applications of Transistors - Question 9
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The input voltage applied to a cascaded amplifier (consisting of two amplifiers) is 0.02 V and the output voltage is 6 V. The voltage gain of one of the two amplifiers is 10. What is the voltage gain of the other amplifier?​
Detailed Solution for Test: Applications of Transistors - Question 9

Test: Applications of Transistors - Question 10
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In a common base transistor circuit, the current gain is 0.98. On changing emitter current by 5 mA, the change in collector current is​
Detailed Solution for Test: Applications of Transistors - Question 10

Given, That the current gain is 0.98
The change in emitter current is Ie​=5mA
Therefore, the change in collector current is Ic​=0.98×Ie​=0.98×5=4.9mA
Therefore, the correct option is C.

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