Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
.jpg)
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 RMS value of alternating current is:
Question # 2
An A.C varies as a function of
Question # 3
Conversion of alternating current into direct current is called
Question # 4
Which one of the following is correct?
Question # 5
The r.m.s. value of alternating current is equal to its maximum value at angle of
Question # 6
If we connect a A.C. volt meter to read A.C. voltage, It would read its:
Question # 7
The device which allows only the flow of an A.C. through a circuit is
Question # 8
Average value of A.C voltage during one cycle is
Question # 9
An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
Question # 10
Which one of the following waves belongs to electromagnetic spectrum
Question # 11
In half wave rectification
Question # 12
A changing magnetic flux creates around itself
Question # 13
The phase at the positive peak of an A.C. cycle is:
Question # 14
The wave form of alternating voltage is the graph between:
Question # 15
In series RC circuit when R=Xc, then the phase angle is
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 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 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
|
| 3 | In a transistor, the central region is called |
A. collector
B. emitter
C. base
D. none of them
|
| 4 | A P-N juction or semiconductor diode cannot be used as |
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
|
| 5 | The basic circuit element in D.C. circuit is: |
A. A capacitor
B. A resistor
C. An inductor
D. Both (A) and (C)
|
| 6 | The bridge circuit of full wave rectification uses |
A. one diode
B. two diode
C. three diode
D. four diode
|
| 7 |
Peak value of alternative current is: |
A. one of its Instantaneous value
B. Equal to its RMS value
C. The same as its peak-to-peak value
D. Both (B) and (C)
|
| 8 | In RLC series circuit, resonance occurs when |
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
|
| 9 | A digital system deals with quantities or variables which have |
A. only one state
B. only two discrete states
C. three discrete states
D. four discrete states
|
| 10 | The length of rotating vector (on a certain scale) represents the: |
A. Peak value of alternating quantity
B. RMS value of alternating quantity
C. Instantaneous value of alternating quantity
D. Either (B) or (C)
|
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