MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Electrical Engineering
Electrostatics
Quiz 4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Q.1
Mica capacitors are characterised by all of the following except
stable operation
accurate value
low leakage reactance
low losses
Q.2
"The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed".
The above statement is associated with
Coulomb’s square law
Gauss’s law
Maxwell’s first law
Maxwell’s second law
Q.3
“The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface”.
The above statement is associated with
Gauss’s law
Kirchhoff's law
Faraday’s law
Lenz’s law
Q.4
Which is the most superior dielectric out of the following ?
Air
Glass
Bakelite
Paper
Q.5
Which capacitor will be physically smaller for the same ratings ?
Ceramic capacitor
Paper capacitor
Both will be of equal size
None of the above
Q.6
The value of dielectric constant for vacuum is taken as
zero
1
4
10
Q.7
Which of the following expression is correct for electric field strength ?
E = D/E
E = D2/t
E = jtD
E= nD2
Q.8
A dielectric material must be
resistor
insulator
good conductor
semi conductor
Q.9
A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is
0.2 s
0.4 s
0.6 s
0.8 s
Q.10
Electric intensity at any point in an electric field is equal to the at that point.
electric flux
magnetic flux density
potential gradient
none of the above
Q.11
Which of the following statements is incorrect ?
The leakage resistance of ceramic capacitors is generally high
The stored energy in a capacitor decreases with reduction in value of capacitance
The stored energy in a capacitor increases with applied voltage
A wire cable has distributed capacitance between the conductors
Q.12
For a good 0.05 uF capacitor ohmmeter reading should
show low resistance momentarily and back off to a very high resistance
show high resistance momentarily and then a very low resistance
go quickly to 50 ohm approximately and remain there
not move at all
Q.13
Paper condenser is
always polarised
usually of fixed value
electrolytic condenser
a variable condenser
Q.14
The direction of electric field due +0 positive charge is .
away from the charge
towards the charge
both (A) and (B)
none of the above
Q.15
The capacitance of a capacitor is not affected by
distance between plates
area of plates
thickness of plates
all of the above
Q.16
Which of the following capacitors has relatively shorter shelf life ?
Mica capacitor
Electrolytic capacitor
Ceramic capacitor
Paper capacitor
Q.17
The ohmmeter reading for a short circuited capacitor is
infinity
few kilo ohms
few megohms
zero
Q.18
For which of the following parameter variation, the capacitance of the capacitor remains unaffected ?
Distance between plates
Area of the plates
Nature of dielectric
Thickness of the plates
Q.19
The property of a capacitor to store electricity is called its
capacitance
charge
energy
none of the above
Q.20
A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is
100 kV/m
10 kV/m
5 kV/m
2 kV/m
Q.21
The dielectric constant (relative permittivity) of glass is given by
0.1 to 0.4
0.5 to 1.0
2.0 to 4.0
5 to 100
Q.22
The total deficiency or excess of electrons in a body is known as
current
voltage
potential gradient
charge
Q.23
The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be
36 x 10 fa
36 x 107 N
36 x 108 N
36 x 109 N
Q.24
Which of the following is not a vector ?
Linear momentum
Angular momentum
Electric field
Electric potential
Q.25
The unit of capacitance is
henry
ohm
farad
farad/m
Q.26
The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value,
37
42
63
73
Q.27
Which of the following capacitor is preferred in case of single phase motor ?
Mica capacitor
Paper capacitor
Electrolytic capacitor
Ceramic capacitor
Q.28
In the case of a lossy capacitor, its series equivalent resistance value will be
small
very small
large
zero
Q.29
The capacitor preferred for high frequency circuits is
air capacitor
mica capacitor
electrolytic capacitor
none of the above
Q.30
1 volt/meter is same as
1 meter/coulomb
1 newton/meter
1 newton/coulomb
1 joule/coulomb
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page