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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
Nowadays, Most of the electric energy is produced by the A.C. generators using:
Question # 2
In which of the following components, pn-junction is used
Question # 3
Which of the following has a great concentration of impurity
Question # 4
The amplifier which us used to perform mathematical operations electronically is known as
Question # 5
The circuit which is used to smooth the output voltage of the full-wave rectification is known as
Question # 6
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 # 7
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 8
Most OP-AMP operates with
Question # 9
The length of rotating vector (on a certain scale) represents the:
Question # 10
Alternating current can induce voltage because it has a
Question # 11
Which one of the following waves belongs to electromagnetic spectrum
Question # 12
Chock consumes externally small
Question # 13
To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance
Question # 14
The alternative voltage of current is actually measured by:
Question # 15
The open loop gain of OP-AMP is of the order of
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 -
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D dark goblin 19 - Jul - 2024 00 Min 39 Sec 50/60 -
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 -
M musman shahid 03 - Jun - 2024 02 Min 53 Sec 30/60
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Most OP-AMP operates with |
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
|
| 2 | In a transistor, if the central region is p-type then this type of transistor is known as |
A. p-n-p transistor
B. n-p-n transistor
C. either of these
D. none of these
|
| 3 | 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
|
| 4 | A changing magnetic flux creates around itself |
A. An electromotive force
B. An electric field (changing electric flux)
C. Magnetic field
D. None of the above
|
| 5 | 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
|
| 6 | An A.C varies as a function of |
A. Current
B. Voltage
C. Time
D. Charge
|
| 7 | At resonance, the phase angle for RLC series resonance circuit equals |
A. 0°
B. 90°
C. 180°
D. 270°
|
| 8 | Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean: |
A. Peak value
B. RMS value
C. Instantaneous value
D. Peak-to-peak value
|
| 9 | The average of A.C. current and voltage over a complete cycle is |
A. Maximum
B. zero
C. Neither zero nor maximum
D. None of these
|
| 10 | 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
|
Test Questions
