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

At resonance frequency the impedance of parallel resonance circuit is

Question # 2

A digital system deals with quantities or variables which have

Question # 3

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

Question # 4

Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length

Question # 5

Transmitting antenna emits

Question # 6

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

Question # 7

The basic circuit elements of A.C circuit are

Question # 8

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

Question # 9

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

Question # 10

A diode characteristic curve is a plot between

Question # 11

The closed loop gain of the inverting amplifier is written as

Question # 12

The phase at the positive peak of an A.C. cycle is:

Question # 13

Conversion of alternating current into direct current is called

Question # 14

During each cycle, alternating voltage reaches a peak value

Question # 15

For a n-p-n transistor, the conventional current equation can be written as

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 During the negative half-cycle of the half-wave rectification, the diode
A. does not conduct
B. conducts
C. either of these
D. none of these
2 When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
A. 9.4 kHz
B. 940 kHz
C. 94 kHz
D. None of these
3 Which one of the following is correct?
A. Vo= 1.414 Vrms
B. Iams= 1.414 Io
C. VO = 10.70 Vrms
D. Both a and b
4 At resonance, the impedance of RLC series circuit is
A. Maximum
B. Zero
C. Minimum
D. Determinate
5 Nowadays, Most of the electric energy is produced by the A.C. generators using:
A. Hydal water
B. Geothermal energy
C. Solar energy
D. Biomass
6 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
7 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
8 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
9 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
10 The basic circuit elements of A.C circuit are
A. Resistor
B. Inductor
C. Capacitor
D. All the three

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