ECAT Pre Engineering Physics Chapter 16 online mcq test with answers for chapter 16 (Alternating Current)

Physics ECAT Pre Engineering Chapter 16 Alternating Current Online Test

Sr. #	Questions	Answers Choice
1	The closed loop gain of the non-inverting amplifier is given by	G = R<sub>2</sub>/R<sub>1</sub> G = -R<sub>2</sub>/R<sub>1</sub> G = 1 - R<sub>2</sub>/R<sub>1</sub> G = 1 + T<sub>2</sub>/R<sub>1</sub>
2	The closed loop gain of the inverting amplifier is written as	G = R<sub>2</sub>/R<sub>1</sub> G = 1 + R<sub>2</sub>/R<sub>1</sub> G = -R<sub>2</sub>/R<sub>1</sub> G = 1 - R<sub>2</sub>/R<sub>1</sub>
3	The open loop gain of OP-AMP is of the order of	10<sup>2</sup> 10<sup>3</sup> 10<sup>4</sup> 10<sup>5</sup>
4	The value of output resistance of OP-AMOP is of the order of	few ohms few hundred ohms several kilo ohms several mega ohms
5	Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is	zero small large very large
6	The value of the input resistance of OP-AMP is of the order of	few ohms few hundred ohms several kilo ohms several maga ohms
7	The input resistance of the OP-AMP is the resistance between the	(-) input and output (+) input and output (-) and (+) inputs between any inputs
8	A signal is amplified at the output without any change of phase, if it is applied at the	inverting input non-inverting input at any of the input none of these
9	A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at	inverting input non-inverting input any one of the input terminal none of them
10	OP-AMP has the following input terminals	one two three four
11	The amplifier which us used to perform mathematical operations electronically is known as	calculator OP-AMP computer any one of them
12	When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the	base and emitter collector and emitter base and collector any one of these
13	The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its	I<sub>c</sub>will decrease V<sub>CE</sub>will increase I<sub>C</sub>will increase V<sub>CC</sub>will increase
14	When the emitter-base junction of a transistor is reverse biased, collector current	Reverses Increases Decreases Stops
15	The value of current gain of n-p-n transistor is of the order of	tens hundreds thousands ten thousands

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