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MCQ's Test For ECAT Physics Chapter 16 Alternating Current
Try The MCQ's Test For ECAT Physics Chapter 16 Alternating Current
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Total Questions15
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Time Allowed20
ECAT Physics Chapter 16 Alternating Current
00:00
Question # 1
Electromagnetic waves transmit energy equal to
Question # 2
During each cycle, alternating voltage reaches a peak value
Question # 3
For the normal operation of the transistor, its
Question # 4
When the emitter-base junction of a transistor is reverse biased, collector current
Question # 5
Which of the following diodes can operate in the reverse biased condition
Question # 6
The sum of positive and negative peak values is called:
Question # 7
The value of output resistance of OP-AMOP is of the order of
Question # 8
If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
Question # 9
The time interval during which the Voltage source changes its polarity once is known as:
Question # 10
Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length
Question # 11
Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
Question # 12
In series RC circuit when R=Xc, then the phase angle is
Question # 13
The basic circuit elements of A.C circuit are
Question # 14
The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
Question # 15
In frequency modulation (FM), the carrier waves amplitude
Top Scorers Of ECAT Physics Chapter 16 Alternating Current MCQ`s Test
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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 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
|
| 2 |
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)
|
| 3 | During each cycle, alternating voltage reaches a peak value |
A. One time
B. Two times
C. Four times
D. A number of times depending on the frequency
|
| 4 | Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length |
A. X-rays
B. Ultraviolet rays
C. y-rays
D. Cosmic rays
|
| 5 | The sum of positive and negative peak values is called: |
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
|
| 6 | In series RC circuit when R=Xc, then the phase angle is |
A. 0°
B. 90°
C. 70°
D. 45°
|
| 7 | If the value of C in a series RLC circuit is increased, the resonant frequency |
A. Is not affected
B. Increase
C. Remains the same
D. Decreases
|
| 8 | The phase angle of a series RLC circuit at resonance is |
A. 180°
B. 90°
C. 0°
D. None of the these
|
| 9 | 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
|
| 10 | In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted. |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
|
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