_____ are used where it is necessary to control a circuit by a low power signal.

DGVCL Exam Paper (12-06-2016)
_____ are used where it is necessary to control a circuit by a low power signal.

None of these

Electric Motor

Relays

Transformer

None of these

Electric Motor

Relays

Transformer

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DGVCL Exam Paper (12-06-2016)
A 17 inch personal computer uses approximately 150 watts in an hour. If you have same computer on for only 4 minutes (for checking e-mail) what would be the power consumption?

0.1 kW

0.01 kW

None of these

0.04 kW

0.1 kW

0.01 kW

None of these

0.04 kW

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DGVCL Exam Paper (12-06-2016)
The following formula is correct:

Load facto r= Average load for a period/Peak load for the same period

Load factor = Average load for a period + Peak load for the same period

All of these

Load factor = Average load for a period x Peak load for the same period

Load facto r= Average load for a period/Peak load for the same period

Load factor = Average load for a period + Peak load for the same period

All of these

Load factor = Average load for a period x Peak load for the same period

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DGVCL Exam Paper (12-06-2016)
A Step Up transformer :

Steps up the level of Voltage

Step up the level of Frequency

Steps down the level of current

(a) and (b) only

Steps up the level of Voltage

Step up the level of Frequency

Steps down the level of current

(a) and (b) only

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DGVCL Exam Paper (12-06-2016)
kWh meter is the electric meter that measures the amount of electrical _____ in kWh that was consumed in the house.

Voltage

None of these

Current

Energy

Voltage

None of these

Current

Energy

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DGVCL Exam Paper (12-06-2016)
What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage:

Eddy Current and Hysteresis losses will be excessive

No effect

Transformer may start to smoke and burn

Current will be too much high

Eddy Current and Hysteresis losses will be excessive

No effect

Transformer may start to smoke and burn

Current will be too much high

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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016) _____ are used where it is necessary to control a circuit by a low power signal.

DGVCL Exam Paper (12-06-2016) A 17 inch personal computer uses approximately 150 watts in an hour. If you have same computer on for only 4 minutes (for checking e-mail) what would be the power consumption?

DGVCL Exam Paper (12-06-2016) The following formula is correct:

DGVCL Exam Paper (12-06-2016) A Step Up transformer :

DGVCL Exam Paper (12-06-2016) kWh meter is the electric meter that measures the amount of electrical _____ in kWh that was consumed in the house.

DGVCL Exam Paper (12-06-2016) What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage:

DGVCL Exam Paper (12-06-2016)
_____ are used where it is necessary to control a circuit by a low power signal.

DGVCL Exam Paper (12-06-2016)
A 17 inch personal computer uses approximately 150 watts in an hour. If you have same computer on for only 4 minutes (for checking e-mail) what would be the power consumption?

DGVCL Exam Paper (12-06-2016)
The following formula is correct:

DGVCL Exam Paper (12-06-2016)
A Step Up transformer :

DGVCL Exam Paper (12-06-2016)
kWh meter is the electric meter that measures the amount of electrical _____ in kWh that was consumed in the house.

DGVCL Exam Paper (12-06-2016)
What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage: