By inserting a plate of dielectric material between the plates of a parallel plate capacitor at constant potential, the energy stored in the capacitor is increased five times. The dielectric constant of the material is

MGVCL Exam Paper (30-07-2021 Shift 1)
By inserting a plate of dielectric material between the plates of a parallel plate capacitor at constant potential, the energy stored in the capacitor is increased five times. The dielectric constant of the material is

1/5

1/25

25

5

1/5

1/25

25

5

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MGVCL Exam Paper (30-07-2021 Shift 1)
While selecting the gas for a circuit breaker, the property of gas that should be considered is its
(i) dielectric strength
(ii) non-inflammability
(iii) non-toxicity

(i) only

(i) and (iii) only

(i) and (ii) only

(i), (ii) and (iii)

(i) only

(i) and (iii) only

(i) and (ii) only

(i), (ii) and (iii)

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MGVCL Exam Paper (30-07-2021 Shift 1)
Voltage dips cannot be caused by which of the following:

Local and Remote faults

Switching on of Large Loads

Capacitive Switching

Inductive Loading

Local and Remote faults

Switching on of Large Loads

Capacitive Switching

Inductive Loading

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MGVCL Exam Paper (30-07-2021 Shift 1)
A coil having an inductance of 100 mH is magnetically coupled to another coil having an inductance of 900 mH. The coefficient of coupling between the coils is 0.45. Calculate the equivalent inductance if the two coils are connected in series aiding.

1270 mH

730 mH

932 mH

1135 mH

1270 mH

730 mH

932 mH

1135 mH

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MGVCL Exam Paper (30-07-2021 Shift 1)
As per _ guidelines, if the ratio of carbon dioxide (CO₂) and carbon monoxide (CO) in dissolved gas analysis is _, it is predicted that the condition of paper insulation inside the transformer is poor.

IEC-899, less than 11

IEC-599, less than 11

IEC-599, more than 11

IEC-899, more than 11

IEC-899, less than 11

IEC-599, less than 11

IEC-599, more than 11

IEC-899, more than 11

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MGVCL Exam Paper (30-07-2021 Shift 1)
Consider the following statements and choose the correct option:
Statement 1: The magnitude of earth fault current for a given fault position within a winding depends upon the method of neutral grounding.
Statement 2: Earth fault protection for an electric motor is provided by means of instantaneous overcurrent relay.

Both Statement 1 and Statement 2 are FALSE

Statement 1 is TRUE and Statement 2 is FALSE

Statement 1 is FALSE and Statement 2 is TRUE

Both Statement 1 and Statement 2 are TRUE

Both Statement 1 and Statement 2 are FALSE

Statement 1 is TRUE and Statement 2 is FALSE

Statement 1 is FALSE and Statement 2 is TRUE

Both Statement 1 and Statement 2 are TRUE

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MGVCL Exam Paper (30-07-2021 Shift 1)

MGVCL Exam Paper (30-07-2021 Shift 1) By inserting a plate of dielectric material between the plates of a parallel plate capacitor at constant potential, the energy stored in the capacitor is increased five times. The dielectric constant of the material is

MGVCL Exam Paper (30-07-2021 Shift 1) While selecting the gas for a circuit breaker, the property of gas that should be considered is its(i) dielectric strength(ii) non-inflammability(iii) non-toxicity

MGVCL Exam Paper (30-07-2021 Shift 1) Voltage dips cannot be caused by which of the following:

MGVCL Exam Paper (30-07-2021 Shift 1) A coil having an inductance of 100 mH is magnetically coupled to another coil having an inductance of 900 mH. The coefficient of coupling between the coils is 0.45. Calculate the equivalent inductance if the two coils are connected in series aiding.

MGVCL Exam Paper (30-07-2021 Shift 1) As per ___ guidelines, if the ratio of carbon dioxide (CO₂) and carbon monoxide (CO) in dissolved gas analysis is ___, it is predicted that the condition of paper insulation inside the transformer is poor.

MGVCL Exam Paper (30-07-2021 Shift 1)
By inserting a plate of dielectric material between the plates of a parallel plate capacitor at constant potential, the energy stored in the capacitor is increased five times. The dielectric constant of the material is

MGVCL Exam Paper (30-07-2021 Shift 1)
While selecting the gas for a circuit breaker, the property of gas that should be considered is its
(i) dielectric strength
(ii) non-inflammability
(iii) non-toxicity

MGVCL Exam Paper (30-07-2021 Shift 1)
Voltage dips cannot be caused by which of the following:

MGVCL Exam Paper (30-07-2021 Shift 1)
A coil having an inductance of 100 mH is magnetically coupled to another coil having an inductance of 900 mH. The coefficient of coupling between the coils is 0.45. Calculate the equivalent inductance if the two coils are connected in series aiding.

MGVCL Exam Paper (30-07-2021 Shift 1)
As per _ guidelines, if the ratio of carbon dioxide (CO₂) and carbon monoxide (CO) in dissolved gas analysis is _, it is predicted that the condition of paper insulation inside the transformer is poor.