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Free download in PDF Electromagnetic Theory Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
A Mica Capacitor And A Ceramic Capacitor Both Have The Same Physical Dimensions. Which Will Have More Value Of Capacitance ?
[A]
Mica Capacitor
[B]
Ceramic Capacitor
[C]
Both Will Have Identical Value Of Capacitance
[D]
It Depends On Applied Voltage
Answer: Ceramic Capacitor
42
Which Of The Following Capacitors Can Be Used For Temperature Compensation ?
[A]
Ceramic Capacitor
[B]
Air Capacitor
[C]
Paper Capacitor
[D]
None Of The Above
Answer: Ceramic Capacitor
43
A Single Core Cable Used On 33000 V Has Conductor Diameter 10 Mm And The In¬Ternal Diameter Of Sheath 25 Mm. The Maximum Electrostatic Stress In The Cable Is
[A]
72 X 105 V/M
[B]
92 X 105 V/M
[C]
62 X 105 V/M
[D]
None Of The Above
44
The Number Of Faraday Tubes Of Flux Passing Through A Surface In An Electric Field Is Called
[A]
Electric Flux
[B]
Magnetic Flux Density
[C]
Electric Flux Density
[D]
Electric Charge Density
45
The Value Of E Within The Field Due To A Point Charge Can Be Found With The Help Of
[A]
Coulomb's Laws
[B]
Kirchhoff S Laws
[C]
Faraday's Laws
[D]
None Of The Above
46
At A Point Is Equal To The Negative Potential Gradient At That Point.
[A]
Magnetic Flux
[B]
Electric Flux
[C]
Electric Intensity
[D]
None of these
Answer: Electric Intensity
47
Is That Property Of A Capacitor Which Delays Any Change Of Voltage Across It.
[A]
Capacitance
[B]
Inductance
[C]
Potential Gradient
[D]
None Of The Above
48
What Will Happen To An Insulating Medium If Voltage More Than The Breakdown Voltage Is Applied On It ?
[A]
It Will Get Punctured Or Cracked
[B]
It Will Melt
[C]
It Will Become Magnetic
[D]
Its Molecular Structure Will Get Changed
Answer: It Will Get Punctured Or Cracked
49
Out Of The Following Capacitors Of Identical Rating Which One Will Have The Smallest Dimensions ?
[A]
Ceramic Capacitor
[B]
Mica Capacitor
[C]
Aluminium Foil Capacitor
[D]
Paper Capacitor
Answer: Ceramic Capacitor
50
Paper Condenser Is
[A]
Usually Of Fixed Value
[B]
Always Polarised
[C]
Electrolytic Condenser
[D]
A Variable Condenser
Answer: Usually Of Fixed Value
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