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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 value of the potential difference across the depletion region for the case of germanium is
Question # 2
A P-N juction or semiconductor diode cannot be used as
Question # 3
In an A.C circuit with resistor only, the current and voltage have a phase angle of
Question # 4
For a n-p-n transistor, the conventional current equation can be written as
Question # 5
Nowadays, Most of the electric energy is produced by the A.C. generators using:
Question # 6
The waveform of alternating voltage is a:
Question # 7
The basic circuit elements of A.C circuit are
Question # 8
Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
Question # 9
For normal operation of transistor, the batteries
Question # 10
The highest value reached by the voltage or current:
Question # 11
The value of output resistance of OP-AMOP is of the order of
Question # 12
If the value of C in a series RLC circuit is increased, the resonant frequency
Question # 13
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
Question # 14
In free space, the speed of electromagnetic waves is
Question # 15
During the positive half-cycle in the half-wave rectification,the diode
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 | The phase at the positive peak of an A.C. cycle is: |
A. 0º
B. 90º
C. 180º
D. 0 andᏘ
|
| 2 | An A.C varies as a function of |
A. Current
B. Voltage
C. Time
D. Charge
|
| 3 | In frequency modulation (FM), the carrier waves amplitude |
A. Remains constant
B. Increase
C. Decreases
D. None of these
|
| 4 | Nowadays, Most of the electric energy is produced by the A.C. generators using: |
A. Hydal water
B. Geothermal energy
C. Solar energy
D. Biomass
|
| 5 | 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
|
| 6 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 7 | 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
|
| 8 | Which of the following diodes can operate in the reverse biased condition |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. none of these
|
| 9 | When the p-n junction is forward biased its resistance is of the order of |
A. few mega ohms
B. few kilo ohms
C. few ohms
D. few milli ohms
|
| 10 | OP-AMP has the following input terminals |
A. one
B. two
C. three
D. four
|
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