Electromagnetic Theory MCQs | Electromagnetic Theory Short Questions and Answers

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Questions
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
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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

Answer: 72 X 105 V/M
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

Answer: Electric Flux
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

Answer: Coulomb's Laws
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

Answer: Capacitance
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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