Recent questions tagged secondary

1 answer 4 views

State the meaning of secondary instrument. Classify secondary instruments.

asked Sep 6, 2018 by Shimroz123
1 answer 3 views

State the meaning of absolute instrument and secondary instrument. 

asked Sep 6, 2018 by Shimroz123
2 answers 18 views

Why CT is never operated with an open secondary ?

asked Sep 6, 2018 by Shimroz123
1 answer 14 views

Compare primary and secondary instruments.

asked Sep 6, 2018 by Shimroz123
1 answer 43 views

Write difference between absolute & secondary instrument.

asked Sep 5, 2018 by Shimroz123
1 answer 23 views

Which of the following connection of transformers will give highest value of secondary voltage ? (A) Delta primary delta secondary (B) Delta primary star secondary (C) Star primary star secondary (D) Star primary delta secondary

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 38 views

Increasing the number of turns of wire on the secondary of a transformer will  (A) Decrease the secondary current (B) Increase the primary current (C) Have no effect on the secondary current (D) Increase the secondary current

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 25 views

A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary?  (A) 30 Volts (B) 480 Volts (C) 120 Volts (D) 60 Volts

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 29 views

If an unsymmetrical line to ground fault occurs at the secondary terminals of a delta/star, ungrounded transformer, then  (A) zero sequence currents are present on both sides of the transformer  (B) zero sequence currents are absent on both sides of the transformer  (C) zero sequence currents are present on the secondary side but not on the primary side  (D) zero sequence currents are present on the primary side but not on the secondary side

asked Apr 29, 2018 in Power system by Shimroz123
1 answer 28 views

What happens to the voltage in the secondary when the frequency of the supply in the primary is decreased? A) It increases B) It decreases C) It remains the same D) Cannot say unless the actual percentage increase in the frequency is known

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 31 views

When secondary of a current transformer is open-circuited its iron core will be?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 23 views

The secondary of a current transformer is always short-circuited under operating conditions because it?

asked Mar 19, 2018 in Transformer by Shimroz123
1 answer 20 views

In a transformer the resistance between its primary and secondary should be?

asked Mar 19, 2018 in Transformer by Shimroz123
0 answers 17 views

What do you mean by secondary instruments?

asked Mar 10, 2018 in Electrical Measurements and Instrumentation by Quiz
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