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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 16 Alternating Current

00:00
Question # 1

A digital system deals with quantities or variables which have

Question # 2

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

Question # 3

Alternating current is produced by a voltage source which polarity:

Question # 4

The r.m.s. value of alternating current is equal to its maximum value at angle of

Question # 5

A diode characteristic curve is a plot between

Question # 6

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

Question # 7

Which of the following has a great concentration of impurity

Question # 8

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

Question # 9

The device which allows only the flow of an A.C. through a circuit is

Question # 10

The closed loop gain of the non-inverting amplifier is given by

Question # 11

The alternative voltage of current is actually measured by:

Question # 12

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

Question # 13

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

Question # 14

Which of the following diode is used for the detection of light

Question # 15

The highest value reached by the voltage or current:

Submit

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


Topic Test

00:00
Submit

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

  • F
    Farzand Shah Farzand Shah 01 - Jun - 2024 00 Min 49 Sec 60/60
  • F
    Faisal Mehar 24 - May - 2024 01 Min 22 Sec 60/60
  • B
    Bilal Javed 10 - Mar - 2024 02 Min 10 Sec 60/60
  • H
    Huzaifa Asim 25 - May - 2024 04 Min 21 Sec 60/60
  • U
    uzma majeed 12 - Mar - 2024 03 Min 28 Sec 55/60
  • K
    Khudeeja Iftikhar 09 - Mar - 2024 01 Min 19 Sec 50/60
  • V
    Viral Edits 29 - May - 2024 04 Min 41 Sec 50/60
  • M
    Muhammad Sufyan 01 - Jun - 2024 00 Min 08 Sec 45/60
  • H
    Hamza Mughal 21 - Mar - 2024 02 Min 02 Sec 45/60
  • A
    Abdullah Zubair 07 - Jan - 2025 02 Min 53 Sec 45/60
  • K
    Kazim Ali 15 - May - 2024 03 Min 10 Sec 45/60
  • M
    Mateen Jadoon 10 - Aug - 2024 04 Min 07 Sec 45/60
  • M
    Munir Ahmad 15 - May - 2024 04 Min 42 Sec 45/60
  • U
    Umaima Saeed 29 - May - 2024 06 Min 32 Sec 45/60
  • A
    Ayra Arshad 06 - Jul - 2024 01 Min 58 Sec 35/60

ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 In frequency modulation (FM), the carrier waves amplitude
A. Remains constant
B. Increase
C. Decreases
D. None of these
2 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
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 When the pn-junction is in reversed biased, current flows through the junction due to the
A. majority carriers
B. minority carriers
C. either of them
D. none of them
5 In n-p-n transistor, emitter base junction is kept
A. reversed
B. forward biased
C. may be reversed or may be forward biased
D. none of these
6 At resonance, the impedance of RLC series circuit is
A. Maximum
B. Zero
C. Minimum
D. Determinate
7 Average value of A.C voltage during one cycle is
A. 1
B. Zero
C. Maximum
D. Variable
8 The r.m.s. value of alternating current is equal to its maximum value at angle of
A. 60°
B. 45°
C. 30°
D. 90°
9 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
10 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

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!