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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
In an A.C circuit with resistor only, the current and voltage have a phase angle of
Question # 2
Mathematical manipulation of the two quantized states can be best carried if they are represented by
Question # 3
An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is
Question # 4
A P-N juction or semiconductor diode cannot be used as
Question # 5
Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:
Question # 6
The sum of positive and negative peak values is called:
Question # 7
Transmitting antenna emits
Question # 8
The R1= infinity and R2= 0, then the gain of non-inverting amplifier is
Question # 9
In a normally biased n-p-n transistor, an electron c current IEflows from the
Question # 10
Which of the following diode is used to derive the current in external circuit when light is incident in the circuit
Question # 11
The amplifier which us used to perform mathematical operations electronically is known as
Question # 12
The most common source of alternating voltage is:
Question # 13
At resonance frequency the impedance of parallel resonance circuit is
Question # 14
The r.m.s. value of alternating current is equal to its maximum value at angle of
Question # 15
Electromagnetic waves transmit energy equal to
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 -
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A Alishba Farooq 09 - Mar - 2024 16 Min 16 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 -
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 -
M musman shahid 03 - Jun - 2024 02 Min 53 Sec 30/60
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | In half wave rectification |
A. both halves of the input voltage is used
B. only one half of the input voltage is used
C. either of these
D. none of these
|
| 2 | The alternative voltage of current is actually measured by: |
A. Its RMS value
B. Square root of its mean square value
C. Instantaneous value
D. Peak value
|
| 3 | Which of the following diode is used for the detection of light |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
|
| 4 | Electromagnetic waves transmit energy equal to |
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
|
| 5 | 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
|
| 6 | The waveform of alternating voltage is a: |
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
|
| 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 | In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted. |
A. photo diode
B. light emitting diode
C. photo voltaic cell
D. all of them
|
| 9 | 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
|
| 10 | 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
|
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