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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
Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
Question # 2
Which one of the following is correct?
Question # 3
The output voltage of half wave rectification is in the form of
Question # 4
The wave form of alternating voltage is the graph between:
Question # 5
The length of rotating vector (on a certain scale) represents the:
Question # 6
The r.m.s. value of alternating current is equal to its maximum value at angle of
Question # 7
The amplifier which us used to perform mathematical operations electronically is known as
Question # 8
The magnitude of alternative voltage V:
Question # 9
Alternating current is produced by a voltage source which polarity:
Question # 10
The input resistance of the OP-AMP is the resistance between the
Question # 11
Which of the following has a great concentration of impurity
Question # 12
In describing functions of digital systems, a closed switch will be shown as
Question # 13
When the pn-junction is forward biased. the current flows through it is of the order of
Question # 14
In a transistor, if the central region is p-type then this type of transistor is known as
Question # 15
The waveform of alternating voltage is a:
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 -
A Abdullah Baloch 02 - Aug - 2024 02 Min 33 Sec 55/60 -
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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 -
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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 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
|
| 2 | Which of the following has a great concentration of impurity |
A. base
B. emitter
C. collector
D. none of these
|
| 3 | The basic circuit element in A.C. circuits are: |
A. Resistor and capacitor
B. Resistor and Inductor
C. Capacitor only
D. Both (B) and (C)
|
| 4 | 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
|
| 5 | The r.m.s. value of alternating current is equal to its maximum value at angle of |
A. 60°
B. 45°
C. 30°
D. 90°
|
| 6 | The circuit which is used to smooth the output voltage of the full-wave rectification is known as |
A. transformer
B. rectifier
C. filter
D. none of these
|
| 7 | In a transistor, the central region is called |
A. collector
B. emitter
C. base
D. none of them
|
| 8 | For the normal operation of the transistor, its |
A. emitter-base and collector base junctions are forward biased
B. emitter-base junction is reversed biased and collector base junction is forward biased
C. emitter-base junction is forward biased and collector-base junction is reverse biased
D. any one of these
|
| 9 | At resonance, the phase angle for RLC series resonance circuit equals |
A. 0°
B. 90°
C. 180°
D. 270°
|
| 10 | The closed loop gain of the inverting amplifier is written as |
A. G = R2/R1
B. G = 1 + R2/R1
C. G = -R2/R1
D. G = 1 - R2/R1
|
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