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

Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is

Question # 2

The average of A.C. current and voltage over a complete cycle is

Question # 3

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

Question # 4

The highest value reached by the voltage or current:

Question # 5

In a transistor, if the central region is p-type then this type of transistor is known as

Question # 6

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

Question # 7

In an A.C circuit with resistor only, the current and voltage have a phase angle of

Question # 8

An A.C varies as a function of

Question # 9

The amplifier which us used to perform mathematical operations electronically is known as

Question # 10

For normal operation of transistor, the batteries

Question # 11

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

Question # 12

The phase angle of a series RLC circuit at resonance is

Question # 13

When the emitter-base junction of a transistor is reverse biased, collector current

Question # 14

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

Question # 15

The sum of positive and negative peak values is called:

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ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 Most OP-AMP operates with
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
2 Transmitting antenna emits
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
3 In which of the following components, pn-junction is used
A. light emitting diode
B. photo diode
C. photo voltaic cell
D. all of these
4 If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
A. 353.5V
B. 250V
C. 175V
D. zero
5 Peak value of alternative current is:
A. one of its Instantaneous value
B. Equal to its RMS value
C. The same as its peak-to-peak value
D. Both (B) and (C)
6 In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
7 The circuit which is used to smooth the output voltage of the full-wave rectification is known as
A. transformer
B. rectifier
C. filter
D. none of these
8 The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its
A. Icwill decrease
B. VCEwill increase
C. ICwill increase
D. VCCwill increase
9 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
10 The magnitude of alternative voltage V:
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant

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