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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
Which of the following diode is used for the detection of light
Question # 2
The output voltage of half wave rectification is in the form of
Question # 3
The alternative voltage of current is actually measured by:
Question # 4
In a transistor, the central region is called
Question # 5
The device which allows only the flow of an A.C. through a circuit is
Question # 6
Conversion of alternating current into direct current is called
Question # 7
A signal is amplified at the output without any change of phase, if it is applied at the
Question # 8
The r.m.s. value of alternating current is equal to its maximum value at angle of
Question # 9
The length of rotating vector (on a certain scale) represents the:
Question # 10
To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance
Question # 11
Electromagnetic waves transmit energy equal to
Question # 12
A changing magnetic flux creates around itself
Question # 13
Transmitting antenna emits
Question # 14
When the pn-junction is in reversed biased, current flows through the junction due to the
Question # 15
For a n-p-n transistor, the conventional current equation can be written as
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 angle of a series RLC circuit at resonance is |
A. 180°
B. 90°
C. 0°
D. None of the these
|
| 2 | The r.m.s. value of alternating current is equal to its maximum value at angle of |
A. 60°
B. 45°
C. 30°
D. 90°
|
| 3 | A diode characteristic curve is a plot between |
A. current and time
B. voltage and time
C. voltage and current
D. forward voltage and reversed voltage
|
| 4 | 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
|
| 5 | The phase at the positive peak of an A.C. cycle is: |
A. 0º
B. 90º
C. 180º
D. 0 andᏘ
|
| 6 | The basic circuit element in A.C. circuits are: |
A. Resistor and capacitor
B. Resistor and Inductor
C. Capacitor only
D. Both (B) and (C)
|
| 7 | In a transistor, if the central region is p-type then this type of transistor is known as |
A. p-n-p transistor
B. n-p-n transistor
C. either of these
D. none of these
|
| 8 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 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 | If 250V is the RMS value of alternative voltage, then its peak value Vowill be: |
A. 353.5V
B. 250V
C. 175V
D. zero
|
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