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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
For normal operation of transistor, the batteries
Question # 2
The sum of positive and negative peak values is called:
Question # 3
In RLC series circuit, resonance occurs when
Question # 4
The value of the input resistance of OP-AMP is of the order of
Question # 5
Chock consumes externally small
Question # 6
The output voltage of half wave rectification is in the form of
Question # 7
The amplifier which us used to perform mathematical operations electronically is known as
Question # 8
In which of the following components, pn-junction is used
Question # 9
Alternating current can be transmitted:
Question # 10
The impedance of RLC series resonance circuit at resonant frequency is
Question # 11
When the pn-junction is forward biased. the current flows through it is of the order of
Question # 12
OP-AMP has the following input terminals
Question # 13
An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
Question # 14
Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
Question # 15
The RMS value of alternating current is:
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 | The time interval during which the Voltage source changes its polarity once is known as: |
A. Time period T
B. Half the time period
C. Quarter the time period
D. Two third of the time period
|
| 2 | The RMS value of alternating current is: |
A. 0.7 times at the peak value
B. 0.5 times the peak value
C. 0.7 times the Instantaneous value
D. Equal to maximum voltage
|
| 3 | 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
|
| 4 | The basic circuit elements of A.C circuit are |
A. Resistor
B. Inductor
C. Capacitor
D. All the three
|
| 5 | To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance |
A. 5.07 pF
B. 50 pF
C. 0.507 pF
D. 507 pF
|
| 6 | The alternative voltage of current is actually measured by: |
A. Its RMS value
B. Square root of its mean square value
C. Instantaneous value
D. Peak value
|
| 7 | The device which allows only the flow of an A.C. through a circuit is |
A. Capacitor
B. Inductor
C. D.C. motor
D. Battery
|
| 8 | 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
|
| 9 | In series RC circuit when R=Xc, then the phase angle is |
A. 0°
B. 90°
C. 70°
D. 45°
|
| 10 | 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
|
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