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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 series RC circuit when R=Xc, then the phase angle is
Question # 2
In RLC series circuit, resonance occurs when
Question # 3
The value of the input resistance of OP-AMP is of the order of
Question # 4
The waveform of alternating voltage is a:
Question # 5
The wave form of alternating voltage is the graph between:
Question # 6
The basic circuit element in A.C. circuits are:
Question # 7
SI unit of impedance is
Question # 8
When either L or C is increased, the resonant frequency of the RLC series circuit
Question # 9
In half wave rectification
Question # 10
The sum of positive and negative peak values is called:
Question # 11
A resonance curve for RLC series circuit is a plot of frequency versus
Question # 12
At resonance, the phase angle for RLC series resonance circuit equals
Question # 13
The closed loop gain of the inverting amplifier is written as
Question # 14
If 250V is the RMS value of alternative voltage, then its peak value Vowill be:
Question # 15
Alternating current can induce voltage because it has a
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M Muhammad Muzammil 11 - Mar - 2024 02 Min 14 Sec 30/60
ECAT Physics Chapter 16 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | In RLC series circuit, resonance occurs when |
A. XL > Xc
B. XL < Xc
C. XL = Xc
D. None of these
|
| 2 | A P-N juction or semiconductor diode cannot be used as |
A. A rectifier
B. Detector
C. Oscillator
D. An amplifier
|
| 3 | The basic circuit elements of A.C circuit are |
A. Resistor
B. Inductor
C. Capacitor
D. All the three
|
| 4 | OP-AMP has the following input terminals |
A. one
B. two
C. three
D. four
|
| 5 | Which one of the following waves belongs to electromagnetic spectrum |
A. Radio and TV waves
B. Radar waves
C. Micro waves
D. All of them
|
| 6 | The total reactance of a series RLC circuit at resonance is |
A. zero
B. Equal to the resistance
C. Infinity
D. Capacitive
|
| 7 | The circuit which is used to smooth the output voltage of the full-wave rectification is known as |
A. transformer
B. rectifier
C. filter
D. none of these
|
| 8 | If the value of C in a series RLC circuit is increased, the resonant frequency |
A. Is not affected
B. Increase
C. Remains the same
D. Decreases
|
| 9 | When the emitter-base junction of a transistor is reverse biased, collector current |
A. Reverses
B. Increases
C. Decreases
D. Stops
|
| 10 | Most OP-AMP operates with |
A. + 6 V supply
B. + 10 V supply
C. + 12 V supply
D. + 24 V supply
|
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