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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
Electromagnetic waves transmit energy equal to
Question # 2
Most OP-AMP operates with
Question # 3
Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
Question # 4
Which of the following diode is used for the detection of light
Question # 5
In half wave rectification
Question # 6
When the pn-junction is forward biased. the current flows through it is of the order of
Question # 7
A signal is amplified at the output without any change of phase, if it is applied at the
Question # 8
In frequency modulation (FM), the carrier waves amplitude
Question # 9
At resonance, the impedance of RLC series circuit is
Question # 10
The impedance of RLC series resonance circuit at resonant frequency is
Question # 11
The most common source of alternating voltage is:
Question # 12
SI unit of impedance is
Question # 13
The alternative voltage of current is actually measured by:
Question # 14
At resonance frequency the impedance of parallel resonance circuit is
Question # 15
In which of the following components, pn-junction is used
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 | 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
|
| 2 | In frequency modulation (FM), the carrier waves amplitude |
A. Remains constant
B. Increase
C. Decreases
D. None of these
|
| 3 | 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 |
A. 2nd group
B. fourth group
C. fifth group
D. sixth group
|
| 4 | Chock consumes externally small |
A. Charge
B. Current
C. Power
D. Potential
|
| 5 | During each cycle, alternating voltage reaches a peak value |
A. One time
B. Two times
C. Four times
D. A number of times depending on the frequency
|
| 6 | The output voltage of half wave rectification is in the form of |
A. a smooth curve
B. a smooth wave
C. pulses
D. all of the above
|
| 7 | 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
|
| 8 | An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is |
A. 3525.0 volts
B. 35.35 volts
C. 353.5 volts
D. 3.535 volts
|
| 9 | A digital system deals with quantities or variables which have |
A. only one state
B. only two discrete states
C. three discrete states
D. four discrete states
|
| 10 | During the negative half-cycle of the half-wave rectification, the diode |
A. does not conduct
B. conducts
C. either of these
D. none of these
|
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