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 of the following has a great concentration of impurity

Question # 2

The basic circuit element in A.C. circuits are:

Question # 3

At resonance, the impedance of RLC series circuit is

Question # 4

For normal operation of transistor, the batteries

Question # 5

Alternating current is produced by a voltage source which polarity:

Question # 6

Peak value of alternative current is:

Question # 7

The bridge circuit of full wave rectification uses

Question # 8

Which of the following diode is used to derive the current in external circuit when light is incident in the circuit

Question # 9

At resonance, the phase angle for RLC series resonance circuit equals

Question # 10

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

Question # 11

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

Question # 12

Transmitting antenna emits

Question # 13

The Instantaneous value of alternative current maybe:

Question # 14

The impedance of RLC series resonance circuit at resonant frequency is

Question # 15

A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The phase at the positive peak of an A.C. cycle is:
A. 0º

B. 90º

C. 180º

D. 0 andᏘ
2 At resonance, the phase angle for RLC series resonance circuit equals
A. 0°
B. 90°
C. 180°
D. 270°
3 The entire wave form of sinusoidal voltage is actually a set of all the:
A. Positive maximum value + Voand negative maximum value -Vo
B. Posiotive maximum value +Vo and zero
C. Zero and negative maximum value -Vo
D. Any of these
4 If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
A. Instantaneous value
B. RMS value
C. Value averaged over a cycle
D. Either (B) or (C)
5 In a transistor, if the central region is n-type, then this type of transistor is known as
A. n-p-n transistor
B. p-n-p transistor
C. either of these
D. none of these
6 If we connect a A.C. volt meter to read A.C. voltage, It would read its:
A. RMS value
B. Instantaneous value
C. Valued average over a cycle
D. Zero
7 Alternating current can induce voltage because it has a
A. High peak value
B. Varying magnetic field
C. Stronger field than direct curren
D. Constant magnetic field
8 SI unit of impedance is
A. hertz
B. henry
C. ampere
D. ohms
9 The sum of positive and negative peak values is called:
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
10 In free space, the speed of electromagnetic waves is
A. 3 x 108ms-1
B. 3 x 106ms-1
C. 4 x 107ms-1
D. 3 x 109ms-1

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