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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
An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
Question # 2
Nowadays, Most of the electric energy is produced by the A.C. generators using:
Question # 3
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 # 4
If the value of C in a series RLC circuit is increased, the resonant frequency
Question # 5
The phase at the positive peak of an A.C. cycle is:
Question # 6
In free space, the speed of electromagnetic waves is
Question # 7
Chock consumes externally small
Question # 8
The device which allows only the flow of an A.C. through a circuit is
Question # 9
OP-AMP has the following input terminals
Question # 10
A diode characteristic curve is a plot between
Question # 11
The wave form of alternating voltage is the graph between:
Question # 12
The time interval during which the Voltage source changes its polarity once is known as:
Question # 13
The output voltage of half wave rectification is in the form of
Question # 14
In frequency modulation (FM), the carrier waves amplitude
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 -
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 | Which of the following diode is used to derive the current in external circuit when light is incident in the circuit |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
|
| 2 | The closed loop gain of the non-inverting amplifier is given by |
A. G = R2/R1
B. G = -R2/R1
C. G = 1 - R2/R1
D. G = 1 + T2/R1
|
| 3 | Average value of A.C voltage during one cycle is |
A. 1
B. Zero
C. Maximum
D. Variable
|
| 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 | In frequency modulation (FM), the carrier waves amplitude |
A. Remains constant
B. Increase
C. Decreases
D. None of these
|
| 6 | 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
|
| 7 | Transmitting antenna emits |
A. Magnetic waves
B. Electric waves
C. Electromagnetic waves
D. Sound waves
|
| 8 | During the positive half-cycle in the half-wave rectification,the diode |
A. does not conduct
B. conducts
C. either of these
D. neither of these
|
| 9 | In RLC series circuit, resonance occurs when |
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
|
| 10 | 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
|
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