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 value of output resistance of OP-AMOP is of the order of
Question # 2
Which one of the following waves belongs to electromagnetic spectrum
Question # 3
The sum of positive and negative peak values is called:
Question # 4
Alternating current can induce voltage because it has a
Question # 5
The waveform of alternating voltage is a:
Question # 6
The basic circuit elements of A.C circuit are
Question # 7
The RMS value of alternating current is:
Question # 8
The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its
Question # 9
In a transistor, the central region is called
Question # 10
When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
Question # 11
The basic circuit element in D.C. circuit is:
Question # 12
The r.m.s. value of alternating current is equal to its maximum value at angle of
Question # 13
A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at
Question # 14
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 15
The bridge circuit of full wave rectification uses
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 | 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
|
| 2 | A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at |
A. inverting input
B. non-inverting input
C. any one of the input terminal
D. none of them
|
| 3 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 4 | Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is |
A. zero
B. small
C. large
D. very large
|
| 5 | Electromagnetic waves transmit energy equal to |
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
|
| 6 | When the p-n junction is forward biased its resistance is of the order of |
A. few mega ohms
B. few kilo ohms
C. few ohms
D. few milli ohms
|
| 7 | The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its |
A. Icwill decrease
B. VCEwill increase
C. ICwill increase
D. VCCwill increase
|
| 8 | Average value of A.C voltage during one cycle is |
A. 1
B. Zero
C. Maximum
D. Variable
|
| 9 | OP-AMP has the following input terminals |
A. one
B. two
C. three
D. four
|
| 10 | The highest value reached by the voltage or current: |
A. In quarter cycle is called Instantaneous value
B. In half cycle is called peak-to-peak value
C. In one cycle is called peak value
D. In half cycle is called Instantaneous 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