ECAT Pre General Science Physics Chapter 16 MCQ Test With Answer

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

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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Pre General Science Physics Chapter 16 Alternating Current

00:00
Question # 1

For the normal operation of the transistor, its

Question # 2

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

Question # 3

In a transistor, the central region is called

Question # 4

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

Question # 5

Which one of the following waves belongs to electromagnetic spectrum

Question # 6

To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance

Question # 7

The entire wave form of sinusoidal voltage is actually a set of all the:

Question # 8

The power factor of resonant series circuit is

Question # 9

The basic circuit elements of A.C circuit are

Question # 10

An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is

Question # 11

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

Question # 12

The value of output resistance of OP-AMOP is of the order of

Question # 13

When the pn-junction is connected reversed biased, its resistance is of the order of

Question # 14

During the negative half-cycle of the half-wave rectification, the diode

Question # 15

In a normally biased n-p-n transistor, an electron c current IEflows from the

Question # 16

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

Question # 17

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

Question # 18

In frequency modulation (FM), the carrier waves amplitude

Question # 19

Transmitting antenna emits

Question # 20

Nowadays, Most of the electric energy is produced by the A.C. generators using:

Question # 21

Average value of A.C voltage during one cycle is

Question # 22

At higher frequency of the alternating current, the capacitive reactance Xc

Question # 23

The impedance of RLC series resonance circuit at resonant frequency is

Question # 24

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

Question # 25

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

Question # 26

If 250V is the RMS value of alternative voltage, then its peak value Vowill be:

Question # 27

At resonance, the impedance of RLC series circuit is

Question # 28

The circuit which is used to smooth the output voltage of the full-wave rectification is known as

Question # 29

A resonance curve for RLC series circuit is a plot of frequency versus

Question # 30

The Instantaneous value of alternative current maybe:

Submit

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 16 Alternating Current MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Pre General Science Physics Chapter 16 Alternating Current MCQ`s Test

  • F
    Faiza 15 - Jan - 2024 05 Min 58 Sec 50/120
  • W
    Waleed Ahmed 25 - Feb - 2023 11 Min 06 Sec 45/120
  • O
    omama 24 - May - 2018 05 Min 38 Sec 25/120
  • H
    Hiba Akhtar 06 - Mar - 2023 03 Min 52 Sec 5/120

ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 The input resistance of the OP-AMP is the resistance between the
A. (-) input and output
B. (+) input and output
C. (-) and (+) inputs
D. between any inputs
2 Chock consumes externally small
A. Charge
B. Current
C. Power
D. Potential
3 Which of the following has a great concentration of impurity
A. base
B. emitter
C. collector
D. none of these
4 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
5 In an A.C circuit with resistor only, the current and voltage have a phase angle of
A. 90°
B. 0°
C. 180°
D. none of these
6 Electromagnetic waves transmit energy equal to
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
7 The impedance of RLC series resonance circuit at resonant frequency is
A. Greater than R
B. Equal to R
C. Less than R
D. None of these
8 A resonance curve for RLC series circuit is a plot of frequency versus
A. Voltage
B. Current
C. Impedance
D. Reactance
9 Transmitting antenna emits
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
10 The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
A. zero
B. infinity
C. one
D. any one of these

Test Questions

Is this page helpful?