Magnetism And Capacitors MCQ Question And Answer

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ITI ELECTRICIAN | Magnetism and Capacitors MCQ

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1.
Calculate the total capacitance value in the circuit.

0.16 µF
6 µF
30 µF
70 µF

2.
What is the unit of capacitance?

Mho
Henry
Farad
Coulomb

3.
What is the capacitance value of a capacitor that requires 0.5 coulomb to charge to 35 volt?

0.014 F
0.025 F
0.14 F
0.25 F

4.
How the value of capacitance can be decreased?

Increasing the plate area
Increasing the resistance of the plates
Increasing the distance between the plates
Using high dielectric constant material

5.
Which is the diamagnetic substance?

Air
Steel
Water
Platinum

6.
Which factor affects the polarity of the electromagnet?

Length of the coil
Direction of current
Strength of current
Strength of the magnetic field

7.
What is the unit of Magneto Motive Force (MMF)?

Ampere / m2
Ampere - m
Ampere - turns
Ampere / turns

8.
What is the total inductance if 3 inductors (L1, L2 and L3) are connected in series?

LT = L1 x L2 x L3
LT = L1 + L2 + L3
C LT = 1/𝐿1 + 1/𝐿2 + 1/𝐿3
D LT = 1/𝐿1+𝐿2+𝐿3

9.
What is the unit of permeance?

Ampere - turns
Weber/Ampere turns
Ampere turns/Weber
Weber/Square metre

10.
Which rule is applied to find the direction of magnetic fields in a solenoid coil?

Cork screw rule
Right hand palm rule
Flemings left hand rule
Flemings right hand rule

11.
Calculate the total value of capacitance of series capacitor circuit.

4µfd
10µfd
15µfd
40µfd

12.
What precaution to be taken before connecting the different voltage rating capacitors in series?

All the capacitors must be same manufacturer
Each capacitors voltage drop must be less than its voltage rating
Total capacitors value must be less than the lowest value of capacitor
Break down voltage of each capacitor must be same

13.
Which material is the paramagnetic substance?

Cleat wiring
Copper
Bismuth
Graphite

14.
What is the part marked as X in B.H curve?

Coercivity
Saturation point
Magnetizing force
Residual magnetism

15.
What is the similar term in magnetic circuit for “conductance” in electrical circuit?

Reluctivity
Permeance
Reluctance
Permeability

16.
What is the unit of Reluctance?

Weber / metre2
Weber / metre
Ampere turns / Weber
Ampere turns / metre2

17.
Which is the correct expression of capacitance C if the electric charge is Q and the voltage is V?

C = Q/V
C = V/Q
C = VQ
D C = √𝑉𝑄

18.
How can you increase the pulling strength of an electromagnet?

Increase the field intensity
Reduce the current in the coil
Reduce the number of turns in the coil
Increase the B-H curve of the material

19.
Which defines the flux density is always lagging behind the magnetising force?

Hysteresis
Magnetic intensity
Magnetic induction
Residual magnetism

20.
What is the effect on surrounding metal placed in a magnetic field?

Hysteresis
Skin effect
Eddy current
Dielectric stress

21.
In which device the air capacitors are used?

TV tuner
Oscillator
Loudspeaker
Radio receiver

22.
What will happen, if the polarized electrolytic capacitor is reversely connected?

No effect on the capacitor
Explode due to excessive heat
Current is reduced in the circuit
Value of capacitance will be increased

23.
Which is the diamagnetic substance?

Wood
Nickel
Platinum
Manganese

24.
What is the S.I unit of Flux density?

Tesla
Weber
Weber/metre
Ampere-turns

25.
What indicates the shape of a BH curve (Hysteresis loop) of material?

Reluctance of the material
Field intensity of the substance
Magnetic properties of the material
Pulling power of the magnetic material

26.
Which electrical quantity is directly proportional to the eddy current?

Voltage
Current
Frequency
Resistance

27.
Which is the cause for changing the permeability?

Length
Flux density
Field intensity
Magneto motive force

28.
Which type of capacitor is used for space electronics?

Plastic film type
Ceramic disc type
Electrolytic-Aluminum type
Electrolytic-Tantalum type

29.
What is the effect of the electrolytic capacitor, if open circuit fault occurs?

It will not function
It will burst at once
It will become leaky
It will function normally

30.
What will be the change in value of capacitance if the distance of the plates are decreased in the capacitor?

Becomes zero
Remains same
Decreases
Increases

31.
Which property of magnet is illustrated?

Directive property
Induction property
Saturation property
Poles existing property

32.
Which is a paramagnetic substance?

Air
Steel
Glass
Water

33.
Which method of magnetization is used to make commercial purpose permanent magnets?

Induction method
Single touch method
Double touch method
Divided touch method

34.
What is the effect of inductance if the distance between the turns increases?

Increases
Decreases
Becomes zero
Remains same

35.
What is the function of dielectric insulator in capacitor?

Increases the strength of capacitance
Prevents any current flow between plates
Protects from short circuit between the plates
Helps to hold the charge in capacitor for long period

36.
Which factor is determining the value of capacitance in capacitor?

Area of the plates
Shape of the plates
Material of the plates
Thickness of the plates

37.
Which type of capacitors are used in RF coupling circuit?

Tantalum
Monolithic
Electrolytic
Metalized poly propylene

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Magnetism and Capacitors MCQ Question and Answer | ITI ELECTRICIAN

PLEASE SELECT YOUR LANGUAGE FROM BELOW

ITI ELECTRICIAN | Magnetism and Capacitors MCQ

PLEASE SELECT YOUR LANGUAGE FROM BELOW

1.Calculate the total capacitance value in the circuit.

2.What is the unit of capacitance?

3.What is the capacitance value of a capacitor that requires 0.5 coulomb to charge to 35 volt?

4.How the value of capacitance can be decreased?

5.Which is the diamagnetic substance?

6.Which factor affects the polarity of the electromagnet?

7.What is the unit of Magneto Motive Force (MMF)?

8.What is the total inductance if 3 inductors (L1, L2 and L3) are connected in series?

9.What is the unit of permeance?

10.Which rule is applied to find the direction of magnetic fields in a solenoid coil?

11.Calculate the total value of capacitance of series capacitor circuit.

12.What precaution to be taken before connecting the different voltage rating capacitors in series?

13.Which material is the paramagnetic substance?

14.What is the part marked as X in B.H curve?

15.What is the similar term in magnetic circuit for “conductance” in electrical circuit?

16.What is the unit of Reluctance?

17.Which is the correct expression of capacitance C if the electric charge is Q and the voltage is V?

18.How can you increase the pulling strength of an electromagnet?

19.Which defines the flux density is always lagging behind the magnetising force?

20.What is the effect on surrounding metal placed in a magnetic field?

21.In which device the air capacitors are used?

22.What will happen, if the polarized electrolytic capacitor is reversely connected?

23.Which is the diamagnetic substance?

24.What is the S.I unit of Flux density?

25.What indicates the shape of a BH curve (Hysteresis loop) of material?

26.Which electrical quantity is directly proportional to the eddy current?

27.Which is the cause for changing the permeability?

28.Which type of capacitor is used for space electronics?

29.What is the effect of the electrolytic capacitor, if open circuit fault occurs?

30.What will be the change in value of capacitance if the distance of the plates are decreased in the capacitor?

31.Which property of magnet is illustrated?

32.Which is a paramagnetic substance?

33.Which method of magnetization is used to make commercial purpose permanent magnets?

34.What is the effect of inductance if the distance between the turns increases?

35.What is the function of dielectric insulator in capacitor?

36.Which factor is determining the value of capacitance in capacitor?

37.Which type of capacitors are used in RF coupling circuit?

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1.
Calculate the total capacitance value in the circuit.

2.
What is the unit of capacitance?

3.
What is the capacitance value of a capacitor that requires 0.5 coulomb to charge to 35 volt?

4.
How the value of capacitance can be decreased?

5.
Which is the diamagnetic substance?

6.
Which factor affects the polarity of the electromagnet?

7.
What is the unit of Magneto Motive Force (MMF)?

8.
What is the total inductance if 3 inductors (L1, L2 and L3) are connected in series?

9.
What is the unit of permeance?

10.
Which rule is applied to find the direction of magnetic fields in a solenoid coil?

11.
Calculate the total value of capacitance of series capacitor circuit.

12.
What precaution to be taken before connecting the different voltage rating capacitors in series?

13.
Which material is the paramagnetic substance?

14.
What is the part marked as X in B.H curve?

15.
What is the similar term in magnetic circuit for “conductance” in electrical circuit?

16.
What is the unit of Reluctance?

17.
Which is the correct expression of capacitance C if the electric charge is Q and the voltage is V?

18.
How can you increase the pulling strength of an electromagnet?

19.
Which defines the flux density is always lagging behind the magnetising force?

20.
What is the effect on surrounding metal placed in a magnetic field?

21.
In which device the air capacitors are used?

22.
What will happen, if the polarized electrolytic capacitor is reversely connected?

23.
Which is the diamagnetic substance?

24.
What is the S.I unit of Flux density?

25.
What indicates the shape of a BH curve (Hysteresis loop) of material?

26.
Which electrical quantity is directly proportional to the eddy current?

27.
Which is the cause for changing the permeability?

28.
Which type of capacitor is used for space electronics?

29.
What is the effect of the electrolytic capacitor, if open circuit fault occurs?

30.
What will be the change in value of capacitance if the distance of the plates are decreased in the capacitor?

31.
Which property of magnet is illustrated?

32.
Which is a paramagnetic substance?

33.
Which method of magnetization is used to make commercial purpose permanent magnets?

34.
What is the effect of inductance if the distance between the turns increases?

35.
What is the function of dielectric insulator in capacitor?

36.
Which factor is determining the value of capacitance in capacitor?

37.
Which type of capacitors are used in RF coupling circuit?