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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
The time interval during which the Voltage source changes its polarity once is known as:
Question # 2
An A.C varies as a function of
Question # 3
A sinusoidally alternating voltage or current can be graphically represented by a:
Question # 4
Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
Question # 5
The waveform of alternating voltage is a:
Question # 6
During each cycle, alternating voltage reaches a peak value
Question # 7
The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
Question # 8
The Instantaneous value of alternative current maybe:
Question # 9
The phase angle of a series RLC circuit at resonance is
Question # 10
When either L or C is increased, the resonant frequency of the RLC series circuit
Question # 11
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 12
A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at
Question # 13
The device which allows only the flow of an A.C. through a circuit is
Question # 14
The total reactance of a series RLC circuit at resonance is
Question # 15
At resonance, the phase angle for RLC series resonance circuit equals
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 -
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 | The Instantaneous value of alternative current maybe: |
A. The same as its RMS value
B. Greater than its Rms value
C. The same as its peak value
D. Any of these
|
| 2 | If 250V is the RMS value of alternative voltage, then its peak value Vowill be: |
A. 353.5V
B. 250V
C. 175V
D. zero
|
| 3 | In free space, the speed of electromagnetic waves is |
A. 3 x 108ms-1
B. 3 x 106ms-1
C. 4 x 107ms-1
D. 3 x 109ms-1
|
| 4 | In series RC circuit when R=Xc, then the phase angle is |
A. 0°
B. 90°
C. 70°
D. 45°
|
| 5 | Most OP-AMP operates with |
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
|
| 6 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 7 | Electromagnetic waves transmit energy equal to |
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
|
| 8 | 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
|
| 9 | A signal is amplified at the output without any change of phase, if it is applied at the |
A. inverting input
B. non-inverting input
C. at any of the input
D. none of these
|
| 10 | 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
|
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