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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 basic circuit elements of A.C circuit are
Question # 2
When either L or C is increased, the resonant frequency of the RLC series circuit
Question # 3
Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is
Question # 4
Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
Question # 5
The most common source of alternating voltage is:
Question # 6
When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency
Question # 7
The average of A.C. current and voltage over a complete cycle is
Question # 8
The length of rotating vector (on a certain scale) represents the:
Question # 9
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 10
Conversion of alternating current into direct current is called
Question # 11
Nowadays, Most of the electric energy is produced by the A.C. generators using:
Question # 12
When the emitter-base junction of a transistor is reverse biased, collector current
Question # 13
Alternating current can be transmitted:
Question # 14
When the pn-junction is connected reversed biased, its resistance is of the order of
Question # 15
An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
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 -
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 -
M Muhammad Muzammil 11 - Mar - 2024 02 Min 14 Sec 30/60
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | For a n-p-n transistor, the conventional current equation can be written as |
A. IE+ IC= IB
B. IC- IB= IE
C. IC+ IB= IE
D. IB+ IE= IC
|
| 2 | At higher frequency of the alternating current, the capacitive reactance Xc |
A. Increases
B. Decreases
C. Remains the same
D. Increases only when the voltage increases
|
| 3 | At resonance frequency the impedance of parallel resonance circuit is |
A. Maximum
B. Minimum
C. Zero
D. None of the above
|
| 4 | 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
|
| 5 | A resonance curve for RLC series circuit is a plot of frequency versus |
A. Voltage
B. Current
C. Impedance
D. Reactance
|
| 6 | Chock consumes externally small |
A. Charge
B. Current
C. Power
D. Potential
|
| 7 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 8 | 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
|
| 9 | The phase angle of a series RLC circuit at resonance is |
A. 180°
B. 90°
C. 0°
D. None of the these
|
| 10 | 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
|
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