Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
.gif)
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
ECAT Physics Chapter 16 Alternating Current
00:00
Question # 1
The amplifier which us used to perform mathematical operations electronically is known as
Question # 2
Transmitting antenna emits
Question # 3
In describing functions of digital systems, a closed switch will be shown as
Question # 4
The total reactance of a series RLC circuit at resonance is
Question # 5
The basic circuit element in D.C. circuit is:
Question # 6
An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
Question # 7
The RMS value of alternating current is:
Question # 8
The most common source of alternating voltage is:
Question # 9
Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
Question # 10
In a transistor, if the central region is n-type, then this type of transistor is known as
Question # 11
In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
Question # 12
The value of current gain of n-p-n transistor is of the order of
Question # 13
The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
Question # 14
Alternating current can be transmitted:
Question # 15
In which of the following components, pn-junction is used
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 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
|
| 2 | 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
|
| 3 | A changing magnetic flux creates around itself |
A. An electromotive force
B. An electric field (changing electric flux)
C. Magnetic field
D. None of the above
|
| 4 | In frequency modulation (FM), the carrier waves amplitude |
A. Remains constant
B. Increase
C. Decreases
D. None of these
|
| 5 | 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
|
| 6 | A diode characteristic curve is a plot between |
A. current and time
B. voltage and time
C. voltage and current
D. forward voltage and reversed voltage
|
| 7 | Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean: |
A. Peak value
B. RMS value
C. Instantaneous value
D. Peak-to-peak value
|
| 8 | In a normally biased n-p-n transistor, an electron c current IEflows from the |
A. emitter into the base
B. collector into the base
C. base into collector
D. none of these
|
| 9 | The magnitude of alternative voltage V: |
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
|
| 10 | 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
|
Test Questions
Share your comments & questions here
Iiqra Fatima
25 May 2018You should let us practice difficult mcqs ..These are too easy for ECAT level....Thanku