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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 basic circuit elements of A.C circuit are
Question # 2
Which one of the following waves belongs to electromagnetic spectrum
Question # 3
Which of the following has a great concentration of impurity
Question # 4
Average value of A.C voltage during one cycle is
Question # 5
The basic circuit element in A.C. circuits are:
Question # 6
When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
Question # 7
The phase at the positive peak of an A.C. cycle is:
Question # 8
A digital system deals with quantities or variables which have
Question # 9
During the positive half-cycle in the half-wave rectification,the diode
Question # 10
If we connect a A.C. volt meter to read A.C. voltage, It would read its:
Question # 11
At resonance frequency the impedance of parallel resonance circuit is
Question # 12
When the pn-junction is forward biased. the current flows through it is of the order of
Question # 13
In free space, the speed of electromagnetic waves is
Question # 14
The open loop gain of OP-AMP is of the order of
Question # 15
In a transistor, the central region is called
Top Scorers Of ECAT Physics Chapter 16 Alternating Current MCQ`s Test
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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 -
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M Muhammad Rizwan 11 - Jul - 2022 02 Min 39 Sec 45/60 -
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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 | SI unit of impedance is |
A. hertz
B. henry
C. ampere
D. ohms
|
| 2 | A sinusoidally alternating voltage or current can be graphically represented by a: |
A. Vector
B. Rotating vector
C. Clockwise vector
D. Anticlockwise voltage vector
|
| 3 | In RLC series circuit, resonance occurs when |
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
|
| 4 |
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)
|
| 5 | 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
|
| 6 | The basic circuit elements of A.C circuit are |
A. Resistor
B. Inductor
C. Capacitor
D. All the three
|
| 7 | The value of current gain of n-p-n transistor is of the order of |
A. tens
B. hundreds
C. thousands
D. ten thousands
|
| 8 | Alternating current can induce voltage because it has a |
A. High peak value
B. Varying magnetic field
C. Stronger field than direct curren
D. Constant magnetic field
|
| 9 | Which of the following diode is used for the detection of light |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
|
| 10 | The amplifier which us used to perform mathematical operations electronically is known as |
A. calculator
B. OP-AMP
C. computer
D. any one 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