Electronics Devices And Circuits Part 4
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Attempt Free Electronics Devices And Circuits Part 4 Here. Read The Important Electrical MCQ From Below.
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2.When a sample of germanium and silicon having same impurity density are kept at room temperature then?
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3.When an RC driving point impedance function has zeros at s= -2 and s=-5 then the admissible poles for the function would be?
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Electronics Devices And Circuits Part 4
4.A transistor has CE parameter as hie = 10kW, hre=20 x 10-4 , hse = 100, hoe = 25 ms. The hib for this transistor will be-
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5.Which one of the following conditions for Z parameters would hold for a two port network containing linear bilateral passive circuit elements?
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6.A transistor is in active region when-
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Electronics Devices And Circuits Part 4
7.In a JFET gates are always?
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8.In schotty barrier diode current flows because of?
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9.The early voltage of a BJT is VA = 75V. The minimum required collector current, such that the output resistance is at least r0 = 200kΩ, is
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Electronics Devices And Circuits Part 4
10.TVS diode is used for
(b) Current protection
(c) ESD protection
(d) None of the above
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[12] Alternatively the characteristic impedance is called
a) Surge Impedance
b) Match Impedance
c) Alternative Impedance
d) Reflected Impedance
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[13] In an RL circuit after a very long time of application of step
voltage the inductance L is represented in its equivalent circuit as
Incorrect!
a) Open Circuit
b) Short Circuit
c) L / 2
d) 2L
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Electronics Devices And Circuits Part 4
[14] By passing a triangular wave through a differentiating circuit the output wave shape is
a) Spikes
b) Squarewave
c) Sawtooth
d) Sinewave
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[15] Clipper circuits are used to obtain any one of the following waveforms
a) Sharper
b) Rectified
c) Fast Rising
d) Smaller Amplitude
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Solution Hint:
[1] When the temperature increases, the resistance of conductor(copper) decreases and resistance of semiconductor(germanium) increases [7] In the FET, the gate terminal is electrically isolated from the channel. ie, it is always unbiased. [10] TVS stands for Transient Voltage suppressor. It is used for transient voltage protection.
[15] The clipper circuit will clip part of the waveform. so it can be used for smaller amplitude of the waveform.
Electronics Devices And Circuits Part 4
