With each visit of this Electronics Devices and Circuits online Quiz / Practice Test, the list of MCQs / Objective Questions presented will be different, offering you a diverse set of practice opportunities. This variability encourages you to practice extensively, refining the accuracy of your answers and your overall grasp of the content. By utilizing this resource, you can hone your skills and become more adept at managing time constraints during actual exams.
Test Instructions Question type Randomized MCQs.Changes every time you visit the test Total Number of Questions 30 Time Limit 20 Minutes Points 1 Point for each Question
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Question 1 of 30
Q-1.If an emitter follower has re’ = 10 ohm and re = 90 ohm, the voltage gain is approximately
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Question 2 of 30
Q-2.If a transistor operates at the middle of the load line, an increase in the base resistance will move the Q point
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Question 3 of 30
Q-3.For a low voltage rectification:
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Question 4 of 30
Q-4.In a p type semiconductor the majority carriers are
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Question 5 of 30
Q-5.The transconductance curve is
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Question 6 of 30
Q-6.When the initial slope of a sine wave is greater than the slew rate,
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Question 7 of 30
Q-7.One advantage of a class B push-pull amplifier is
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Question 8 of 30
Q-8.A semiconductor has how many types of flow?
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Question 9 of 30
Q-9.Of the following, the one with the most stable frequency is the
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Question 10 of 30
Q-10.When an op amp is not saturated, the voltages at the non-inverting and inverting inputs are
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Question 11 of 30
Q-11.The negative feedback in an amplifier
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Question 12 of 30
Q-12.The 78XX series of voltage regulators produces an output voltage that is
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Question 13 of 30
Q-13.Frequency response is a graph of voltage gain versus
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Question 14 of 30
Q-14.For oscillations to start in a circuit, the loop gain must be greater than 1 when the phase shift around the loop is
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Question 15 of 30
Q-15.In a negative feedback amplifier, series mixing:
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Question 16 of 30
Q-16.An amplifier with resistive negative feedback has two left half plane poles in its open-loop transfer junction. The amplifier will be:
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Question 17 of 30
Q-17.If the base current is 100 mA and the current gain is 30, the collector current is
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Question 18 of 30
Q-18.The power rating of a transistor can be increased by
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Question 19 of 30
Q-19.Now a days in MOSFET’s the material used for the gate is:
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Question 20 of 30
Q-20.As the temperature increases, the current gain
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Question 21 of 30
Q-21.What is the most important fact about the collector current?
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Question 22 of 30
Q-22.Depending upon the type of emitter, the temperature used for thermionic emission varies is between
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Question 23 of 30
Q-23.Loop gain is given by:
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Question 24 of 30
Q-24.When the collector current increases, what does the current gain do?
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Question 25 of 30
Q-25.An input transducer converts
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Question 26 of 30
Q-26.A square wave out of an emitter follower implies
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Question 27 of 30
Q-27.When the base resistor decreases, the collector voltage will probably
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Question 28 of 30
Q-28.The voltage that starts an oscillator is caused by
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Question 29 of 30
Q-29.A shorted resistor has
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Question 30 of 30
Q-30.If a splash of solder shorts the collector resistor of TSEB, the collector voltage will
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