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Physics Exam  >  Physics Tests  >  Topic wise Tests for IIT JAM Physics  >  Bipolar Junction Transistor NAT Level -2 - Physics MCQ

Bipolar Junction Transistor NAT Level -2 - Physics MCQ


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10 Questions MCQ Test Topic wise Tests for IIT JAM Physics - Bipolar Junction Transistor NAT Level -2

Bipolar Junction Transistor NAT Level -2 for Physics 2024 is part of Topic wise Tests for IIT JAM Physics preparation. The Bipolar Junction Transistor NAT Level -2 questions and answers have been prepared according to the Physics exam syllabus.The Bipolar Junction Transistor NAT Level -2 MCQs are made for Physics 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Bipolar Junction Transistor NAT Level -2 below.
Solutions of Bipolar Junction Transistor NAT Level -2 questions in English are available as part of our Topic wise Tests for IIT JAM Physics for Physics & Bipolar Junction Transistor NAT Level -2 solutions in Hindi for Topic wise Tests for IIT JAM Physics course. Download more important topics, notes, lectures and mock test series for Physics Exam by signing up for free. Attempt Bipolar Junction Transistor NAT Level -2 | 10 questions in 45 minutes | Mock test for Physics preparation | Free important questions MCQ to study Topic wise Tests for IIT JAM Physics for Physics Exam | Download free PDF with solutions
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Bipolar Junction Transistor NAT Level -2 - Question 1
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Calculate the voltage VC of the circuit shown in the given figure:


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Bipolar Junction Transistor NAT Level -2 - Question 2
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Calculate the minimum value of C2 (in μF) if the amplifier operate over a frequency range of 2kHz to 10kHz?


Detailed Solution for Bipolar Junction Transistor NAT Level -2 - Question 2

RE = 560Ω
XC of the bypass capacitor C2 should be

The capacitive value, at the minimum frequency of 2kHz

The correct answer is: 1.42

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Bipolar Junction Transistor NAT Level -2 - Question 3
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If the Q-point is 2 Vand 1 mA with the help of a feedback resistor RB. β = 100, then what is the value of RB in? (Take VBE = 0.7V).


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The correct answer is: 130

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Bipolar Junction Transistor NAT Level -2 - Question 4
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Calculate the value of VCE (in Volts) for the circuit shown below. (β = 100 and VBE =0.7V).

Detailed Solution for Bipolar Junction Transistor NAT Level -2 - Question 4

Let us use Thevenin’s theorem


Now, applying KVL to Base circuit

= 9.45 μA
lC = 0.945mA
Now, Vcc = IcRc - VCE


The correct answer is: 6.22

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Bipolar Junction Transistor NAT Level -2 - Question 5
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A npn transistor circuit has  ∝ = 0.985. If IC = 2mA then the value of lB (in mA) is?

Detailed Solution for Bipolar Junction Transistor NAT Level -2 - Question 5


= 0.03 mA
The correct answer is: 0.03

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Bipolar Junction Transistor NAT Level -2 - Question 6
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For the circuit shown below, the value of IC is: 

Detailed Solution for Bipolar Junction Transistor NAT Level -2 - Question 6

Concept:
DC Analysis of BJT Amplifier
During the calculation of the DC parameter of a BJT amplifier, the capacitor is open-circuited.

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Bipolar Junction Transistor NAT Level -2 - Question 7
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In the circuit shown in figure below, minimum value of β such that transistor in saturation is

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Bipolar Junction Transistor NAT Level -2 - Question 8
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In a certain oscillator, Av = 50. The attenuation of the feedback circuit must be?

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Bipolar Junction Transistor NAT Level -2 - Question 9
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An amplifier of gain 1000 is made into a feedback amplifier by feeding 9.9% of its output voltage in series with the input opposing. If fl = 20Hz and fh = 200kHz for the amplifier without feedback then due to the feedback what is the new frequency (in kHz)?

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The correct answer is: 20000

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Bipolar Junction Transistor NAT Level -2 - Question 10
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VCE  approximately equals ________ when a transistor switch is in saturation.

Detailed Solution for Bipolar Junction Transistor NAT Level -2 - Question 10

"Saturation" in a transistor switch circuit is achieved when the voltage across the collector/ emitter (VCE(sat)) is less than or equal to . 1 to . 3 volts - depending on the type of transistor. At that voltage point, the transistor appears to act like a simple SPST mechanical switch that has been closed (On).

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