Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
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
In frequency modulation (FM), the carrier waves amplitude
Question # 2
The phase at the positive peak of an A.C. cycle is:
Question # 3
A resonance curve for RLC series circuit is a plot of frequency versus
Question # 4
Which of the following diode is used for the detection of light
Question # 5
If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
Question # 6
Alternating current can be transmitted:
Question # 7
In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
Question # 8
The bridge circuit of full wave rectification uses
Question # 9
The value of output resistance of OP-AMOP is of the order of
Question # 10
The basic circuit element in D.C. circuit is:
Question # 11
At resonance frequency the impedance of parallel resonance circuit is
Question # 12
In which of the following components, pn-junction is used
Question # 13
The highest value reached by the voltage or current:
Question # 14
The open loop gain of OP-AMP is of the order of
Question # 15
The input resistance of the OP-AMP is the resistance between the
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 -
M Muneeb ur Rehman 29 - Jun - 2026 01 Min 47 Sec 56/60 -
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
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 | In describing functions of digital systems, a closed switch will be shown as |
A. 0
B. 1
C. low
D. any one of these
|
| 3 | To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance |
A. 5.07 pF
B. 50 pF
C. 0.507 pF
D. 507 pF
|
| 4 | In half wave rectification |
A. both halves of the input voltage is used
B. only one half of the input voltage is used
C. either of these
D. none of these
|
| 5 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 6 | An A.C varies as a function of |
A. Current
B. Voltage
C. Time
D. Charge
|
| 7 | A P-N juction or semiconductor diode cannot be used as |
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
|
| 8 | 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
|
| 9 | 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
|
| 10 | The sum of positive and negative peak values is called: |
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
|
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