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

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 2

The value of the potential difference across the depletion region for the case of germanium is

Question # 3

A sinusoidally alternating voltage or current can be graphically represented by a:

Question # 4

For the normal operation of the transistor, its

Question # 5

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

Question # 6

Alternating current is produced by a voltage source which polarity:

Question # 7

An A.C varies as a function of

Question # 8

The alternative voltage of current is actually measured by:

Question # 9

The output voltage of half wave rectification is in the form of

Question # 10

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

Question # 11

A P-N juction or semiconductor diode cannot be used as

Question # 12

The time interval during which the Voltage source changes its polarity once is known as:

Question # 13

In n-p-n transistor, emitter base junction is kept

Question # 14

A diode characteristic curve is a plot between

Question # 15

The wave form of alternating voltage is the graph between:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 An A.C varies as a function of
A. Current
B. Voltage
C. Time
D. Charge
2 The wave form of alternating voltage is the graph between:
A. Voltage across X-axis and time across y-axis
B. Current and time
C. Voltage along y-axis and time along x-axis
D. Voltage and current
3 The value of the input resistance of OP-AMP is of the order of
A. few ohms
B. few hundred ohms
C. several kilo ohms
D. several maga ohms
4 A P-N juction or semiconductor diode cannot be used as
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
5 Chock consumes externally small
A. Charge
B. Current
C. Power
D. Potential
6 The average of A.C. current and voltage over a complete cycle is
A. Maximum
B. zero
C. Neither zero nor maximum
D. None of these
7 The time interval during which the Voltage source changes its polarity once is known as:
A. Time period T
B. Half the time period
C. Quarter the time period
D. Two third of the time period
8 The device which allows only the flow of an A.C. through a circuit is
A. Capacitor
B. Inductor
C. D.C. motor
D. Battery
9 Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
10 Which of the following has a great concentration of impurity
A. base
B. emitter
C. collector
D. none of these

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