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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 has a great concentration of impurity
Question # 2
At resonance, the impedance of RLC series circuit is
Question # 3
When either L or C is increased, the resonant frequency of the RLC series circuit
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
For normal operation of transistor, the batteries
Question # 6
In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.
Question # 7
Conversion of alternating current into direct current is called
Question # 8
When the pn-junction is connected reversed biased, its resistance is of the order of
Question # 9
The impedance of RLC series resonance circuit at resonant frequency is
Question # 10
Chock consumes externally small
Question # 11
The alternative voltage of current is actually measured by:
Question # 12
A diode characteristic curve is a plot between
Question # 13
Electromagnetic waves transmit energy equal to
Question # 14
Alternating current can induce voltage because it has a
Question # 15
In half wave rectification
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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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 | 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
|
| 2 | The phase at the positive peak of an A.C. cycle is: |
A. 0º
B. 90º
C. 180º
D. 0 andᏘ
|
| 3 | In RLC series circuit, resonance occurs when |
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
|
| 4 | 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
|
| 5 | The waveform of alternating voltage is a: |
A. Square
B. Rectangular
C. Saw-tooth
D. Sinusoidal
|
| 6 | The emitter-base junction of a transistor is forward-biased and collector-base junction is reverse-biased. If the base current is increased, its |
A. Icwill decrease
B. VCEwill increase
C. ICwill increase
D. VCCwill increase
|
| 7 | 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
|
| 8 | Electromagnetic waves transmit energy equal to |
A. 1/2 mv2
B. moc2
C. hf/c
D. hf
|
| 9 | The sum of positive and negative peak values is called: |
A. Instantaneous value
B. Peak value
C. Rms valuie
D. Peak-to peak-value
|
| 10 | The wave form of alternating voltage is the graph between: |
A. Voltage across X-axis and time across y-axis
B. Current and time
C. Voltage along y-axis and time along x-axis
D. Voltage and current
|
Test Questions