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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 phase angle of a series RLC circuit at resonance is
Question # 2
The closed loop gain of the non-inverting amplifier is given by
Question # 3
Which of the following diode is used for the detection of light
Question # 4
In free space, the speed of electromagnetic waves is
Question # 5
Which one of the following Electro-magnetic wave have the highest frequency and shortest wave-length
Question # 6
In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
Question # 7
In RLC series circuit, resonance occurs when
Question # 8
If the value of C in a series RLC circuit is increased, the resonant frequency
Question # 9
During each cycle, alternating voltage reaches a peak value
Question # 10
When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the
Question # 11
The open loop gain of OP-AMP is of the order of
Question # 12
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 13
The RMS value of alternating current is:
Question # 14
The closed loop gain of the inverting amplifier is written as
Question # 15
An A.C varies as a function 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 -
M Muneeb ur Rehman 29 - Jun - 2026 01 Min 47 Sec 56/60 -
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
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | When the pn-junction is forward biased. the current flows through it is of the order of |
A. mili-amperes
B. amperes
C. nano-amperes
D. micro-amperes
|
| 2 | In a normally biased n-p-n transistor, an electron c current IEflows from the |
A. emitter into the base
B. collector into the base
C. base into collector
D. none of these
|
| 3 | In a transistor, if the central region is n-type, then this type of transistor is known as |
A. n-p-n transistor
B. p-n-p transistor
C. either of these
D. none of these
|
| 4 | In which of the following components, pn-junction is used |
A. light emitting diode
B. photo diode
C. photo voltaic cell
D. all of these
|
| 5 | 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
|
| 6 | The closed loop gain of the non-inverting amplifier is given by |
A. G = R2/R1
B. G = -R2/R1
C. G = 1 - R2/R1
D. G = 1 + T2/R1
|
| 7 | If we connected the ordinary DC ammeter to measure alternating current, it would measure its: |
A. Instantaneous value
B. RMS value
C. Value averaged over a cycle
D. Either (B) or (C)
|
| 8 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 9 | For normal operation of transistor, the batteries |
A. VCCis of much lower value than VBB
B. VCCis of much higher value than VBB
C. VCC is equal toVBB
D. none of these
|
| 10 | The most common source of alternating voltage is: |
A. Motor
B. Transformer
C. AC genrator
D. Both (A) and (C)
|
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