ECAT Pre Engineering Physics Chapter 16 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 16 Alternating Current

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 16 Alternating Current

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Physics ECAT Pre Engineering Chapter 16 Alternating Current

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Question # 1

Which one of the following is correct?

Question # 2

The R1= infinity and R2= 0, then the gain of non-inverting amplifier is

Question # 3

An A.C varies as a function of

Question # 4

In describing functions of digital systems, a closed switch will be shown as

Question # 5

The basic circuit element in D.C. circuit is:

Question # 6

In which of the following components, pn-junction is used

Question # 7

The length of rotating vector (on a certain scale) represents the:

Question # 8

If we connected the ordinary DC ammeter to measure alternating current, it would measure its:

Question # 9

If the value of C in a series RLC circuit is increased, the resonant frequency

Question # 10

The closed loop gain of the non-inverting amplifier is given by

Question # 11

The wave form of alternating voltage is the graph between:

Question # 12

Transmitting antenna emits

Question # 13

Alternating current is produced by a voltage source which polarity:

Question # 14

The bridge circuit of full wave rectification uses

Question # 15

Which of the following diodes can operate in the reverse biased condition

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The closed loop gain of the non-inverting amplifier is given by
A. G = R2/R1
B. G = -R2/R1
C. G = 1 - R2/R1
D. G = 1 + T2/R1
2 The open loop gain of OP-AMP is of the order of
A. 102
B. 103
C. 104
D. 105
3 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
4 The magnitude of alternative voltage V:
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
5 Which one of the following waves belongs to electromagnetic spectrum
A. Radio and TV waves
B. Radar waves
C. Micro waves
D. All of them
6 Which of the following diode is used for the detection of light
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
7 For normal operation of transistor, the batteries
A. VCCis of much lower value than VBB
B. VCCis of much higher value than VBB
C. VCC is equal toVBB
D. none of these
8 At resonance, the impedance of RLC series circuit is
A. Maximum
B. Zero
C. Minimum
D. Determinate
9 When the pn-junction is in reversed biased, current flows through the junction due to the
A. majority carriers
B. minority carriers
C. either of them
D. none of them
10 Alternating current can be transmitted:
A. To long distance
B. At very high cost
C. At very low cost
D. Both (A) and (C)

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