Home
News
Colleges
Courses
Admission
Lectures
Online Test
Past Papers
Date Sheets
Results
Study Abroad
Jobs
Tutors
More
Apps
.jpg)
MCQ's Test For ECAT Physics Chapter 16 Alternating Current
Try The MCQ's Test For ECAT Physics Chapter 16 Alternating Current
-
Total Questions15
-
Time Allowed20
ECAT Physics Chapter 16 Alternating Current
00:00
Question # 1
A resonance curve for RLC series circuit is a plot of frequency versus
Question # 2
OP-AMP has the following input terminals
Question # 3
Average value of A.C voltage during one cycle is
Question # 4
In an A.C circuit with resistor only, the current and voltage have a phase angle of
Question # 5
A digital system deals with quantities or variables which have
Question # 6
A P-N juction or semiconductor diode cannot be used as
Question # 7
An A.C varies as a function of
Question # 8
An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current
Question # 9
When the emitter-base junction of a transistor is reverse biased, collector current
Question # 10
When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the
Question # 11
SI unit of impedance is
Question # 12
At higher frequency of the alternating current, the capacitive reactance Xc
Question # 13
If we connected the ordinary DC ammeter to measure alternating current, it would measure its:
Question # 14
A changing magnetic flux creates around itself
Question # 15
At resonance frequency the impedance of parallel resonance circuit is
Top Scorers Of ECAT Physics Chapter 16 Alternating Current MCQ`s Test
-
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 basic circuit element in A.C. circuits are: |
A. Resistor and capacitor
B. Resistor and Inductor
C. Capacitor only
D. Both (B) and (C)
|
| 2 | The power factor of resonant series circuit is |
A. 1
B. 0
C. -1
D. 0.5
|
| 3 | 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
|
| 4 | The total reactance of a series RLC circuit at resonance is |
A. zero
B. Equal to the resistance
C. Infinity
D. Capacitive
|
| 5 | In series RC circuit when R=Xc, then the phase angle is |
A. 0°
B. 90°
C. 70°
D. 45°
|
| 6 | When the pn-junction is forward biased. the current flows through it is of the order of |
A. mili-amperes
B. amperes
C. nano-amperes
D. micro-amperes
|
| 7 | The magnitude of alternative voltage V: |
A. Always increase
B. Always decrease
C. Remains constant
D. Does not remain constant
|
| 8 | 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
|
| 9 | Alternating current can be transmitted: |
A. To long distance
B. At very high cost
C. At very low cost
D. Both (A) and (C)
|
| 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