ECAT Pre Computer Science Chapter 16 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 16 Alternating Current

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

  • Total Questions15

  • Time Allowed20

Start Test Download PDF

ECAT Physics Chapter 16 Alternating Current

00:00
Question # 1

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

Question # 2

When the pn-junction is in reversed biased, current flows through the junction due to the

Question # 3

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

Question # 4

The open loop gain of OP-AMP is of the order of

Question # 5

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

Question # 6

When either L or C is increased, the resonant frequency of the RLC series circuit

Question # 7

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

Question # 8

The basic circuit elements of A.C circuit are

Question # 9

The wave form of alternating voltage is the graph between:

Question # 10

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

Question # 11

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

Question # 12

In describing functions of digital systems, a closed switch will be shown as

Question # 13

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

Question # 14

In frequency modulation (FM), the carrier waves amplitude

Question # 15

For normal operation of transistor, the batteries

Submit

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


Topic Test

00:00
Submit

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

  • S
    Sana Hashim 20 - May - 2022 00 Min 05 Sec 60/60
  • A
    Anayat Ali 26 - Mar - 2024 00 Min 06 Sec 60/60
  • H
    Heer 02 - Jan - 2024 00 Min 42 Sec 60/60
  • Q
    Qura-tul-Ain Ansari 13 - Mar - 2023 06 Min 42 Sec 60/60
  • A
    Abdullah Baloch 02 - Aug - 2024 02 Min 33 Sec 55/60
  • A
    Alishba Farooq 09 - Mar - 2024 16 Min 16 Sec 55/60
  • D
    dark goblin 19 - Jul - 2024 00 Min 39 Sec 50/60
  • S
    suzi 10 - Feb - 2026 01 Min 47 Sec 48/60
  • M
    Muhammad Rizwan 11 - Jul - 2022 02 Min 39 Sec 45/60
  • S
    Sarmad 18 - Jun - 2022 07 Min 03 Sec 45/60
  • H
    HAMZA Shah 20 - Sep - 2021 01 Min 11 Sec 40/60
  • M
    Muqadas Zahra 13 - Apr - 2022 14 Min 05 Sec 40/60
  • S
    Shaeel Fatima 24 - Feb - 2023 01 Min 10 Sec 35/60
  • T
    tehreemnadeem 11 - Jul - 2022 04 Min 13 Sec 35/60
  • M
    Muhammad Muzammil 11 - Mar - 2024 02 Min 14 Sec 30/60

ECAT Physics Chapter 16 Important MCQ's

Sr.# Question Answer
1 When the pn-junction is connected reversed biased, its resistance is of the order of
A. few ohms
B. few kilo-ohms
C. few mega-ohms
D. few mili-ohms
2 The most common source of alternating voltage is:
A. Motor
B. Transformer
C. AC genrator
D. Both (A) and (C)
3 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
4 At resonance, the phase angle for RLC series resonance circuit equals
A. 0°
B. 90°
C. 180°
D. 270°
5 The bridge circuit of full wave rectification uses
A. one diode
B. two diode
C. three diode
D. four diode
6 Alternating current can be transmitted:
A. To long distance
B. At very high cost
C. At very low cost
D. Both (A) and (C)
7 OP-AMP has the following input terminals
A. one
B. two
C. three
D. four
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 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
10 In frequency modulation (FM), the carrier waves amplitude
A. Remains constant
B. Increase
C. Decreases
D. None of these

Test Questions

Is this page helpful?