The following statements are made regarding the Open Circuit Test on the single-phase transformer: 1. It is performed on the LV side. 2. It is performed at rated current. 3. It helps in the calculation of equivalent leakage impedance. 4. It is performed on the HV side. 5. It is performed at rated voltage. 6. It gives magnetizing current and core loss. 7. It helps in the determination of voltage regulation. 8. It gives the turn ratio. From these, which statements are correct?

2, 4, 6, 8
1, 5, 6, 8
3, 4, 5, 6, 8
2, 4, 7

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 2 : 1, 5, 6, 8

Testing of transformer:

There are two types of tests performed on the transformer.

1.) Open circuit test:

[ alt="F4 Savita Engineering 18-7-22 D17" src="//storage.googleapis.com/tb-img/production/22/07/F4_Savita_Engineering_18-7-22_D17.png" style="width: 354px; height: 194px;">

This test is performed on the LV side keeping the HV side open-circuited.
Ammeter, voltmeter and wattmeter is connected on LV side.
It is performed on rated voltage and rated frequency.
It gives magnetizing current and core loss.
It gives the turn ratio.

2.) Short circuit test:

[ alt="F4 Savita Engineering 18-7-22 D18" src="//storage.googleapis.com/tb-img/production/22/07/F4_Savita_Engineering_18-7-22_D18.png" style="width: 372px; height: 186px;">

This test is performed on the HV side keeping the LV side short-circuited.
Ammeter, voltmeter and wattmeter is connected on HV side.
It is performed on rated current
It gives copper loss.
It helps in the calculation of equivalent leakage impedance.
It helps in the determination of voltage regulation.

4 views Answered 2022-09-04 04:29

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