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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
SI unit of impedance is
Question # 2
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 3
If the value of C in a series RLC circuit is increased, the resonant frequency
Question # 4
The circuit which is used to smooth the output voltage of the full-wave rectification is known as
Question # 5
The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
Question # 6
When the pn-junction is in reversed biased, current flows through the junction due to the
Question # 7
In free space, the speed of electromagnetic waves is
Question # 8
An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
Question # 9
The entire wave form of sinusoidal voltage is actually a set of all the:
Question # 10
An A.C varies as a function of
Question # 11
In a transistor, if the central region is n-type, then this type of transistor is known as
Question # 12
The highest value reached by the voltage or current:
Question # 13
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 # 14
The Instantaneous value of alternative current maybe:
Question # 15
A p-n junction is formed when a crystal of silicon is growth in such a way that its one half is doped with trivalent impurity and the other half with a impurity from
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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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 -
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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 | An A.C varies as a function of |
A. Current
B. Voltage
C. Time
D. Charge
|
| 2 | At resonance frequency the impedance of parallel resonance circuit is |
A. Maximum
B. Minimum
C. Zero
D. None of the above
|
| 3 | Mathematical manipulation of the two quantized states can be best carried if they are represented by |
A. high - low
B. yes - no
C. on - off
D. 0 - 1
|
| 4 | The input resistance of the OP-AMP is the resistance between the |
A. (-) input and output
B. (+) input and output
C. (-) and (+) inputs
D. between any inputs
|
| 5 | At resonance, the impedance of RLC series circuit is |
A. Maximum
B. Zero
C. Minimum
D. Determinate
|
| 6 | 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
|
| 7 | The waveform of alternating voltage is a: |
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
|
| 8 | Which of the following has a great concentration of impurity |
A. base
B. emitter
C. collector
D. none of these
|
| 9 | 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
|
| 10 | Chock consumes externally small |
A. Charge
B. Current
C. Power
D. Potential
|
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