ECAT Physics Chapter 18 Electronics Online Test With Answers

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ECAT Physics Chapter 18 Electronics Online Test

Sr. # Questions Answers Choice
1 Conversion of A.C. into D.C. is called: Reftification Amplification Electric induction Magnetic induction None of these
2 If both the inputs given to a gate ae 1 such that the output is 0, then it is: AND gate NOR gate OR gate NOT gate Both (A) and (C)
3 Truth table of logic function: Summarizes its output values Tabulates all its input conditions only Display all its input/output possibilites Is not based on logic algebra None of these
4 To designate the voltage as low or 0 by a logic gate, the specified minimum value is: 0.2 volt 0.8 volt 0 volt 2.0 volt 5.0 volt
5 Op-amp has been discussed as comparator of: Distances Voltages Velocities Magnetic fields Both (A) and (C)
6 To turn the transistor OFF, the base current is set: At maximum value At zero Either (A) or (B) All are correct None of correct
7 In AND gate, the output is 1 if: Both inputs are 0 Both inputs are 1 Only one input is 0 Both (A) and (B) Both (A) and (C)
8 A digital system deals with quantities which has discrete values: Two in number One in number Three in number Four in number None of these
9 The number of input terminals of an op-amp is: One Two Three Four None of these
10 An electronic computer is basically a vast arrangement of electronic switches which are made from Resistors Transistors N -type crystals P-Type crystals Capacitors
11 To display a digit of EIGHT, the number of ON LED'S are: Two Three Five Seven Eight
12 To make an LED, it is impreacticable to use: Silicon Gallium arsenide Gallium arsenide phosphide Iron Both (B) and (C)
13 In the text book, the transistor amplifier circuit is a: Common emitter circuit Common collector circuit Common base circuit Any of these None of these
14 A transistor has: One region Two regions Three regions Four regions None is correct
15 The number of LED'S needed to display all the digits is: Four Five Nine Six Seven
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