Time Left - 06:00 mins

AE-JE Foundation EE :Electrical Machines quiz-3

Attempt now to get your rank among 226 students!

Question 1

The transformer that does not provide electric isolation is

Question 2

What is the efficiency of an auto-transformer in comparison to that of a two-winding transformer of the same rating?

Question 3

Auto transformer can’t be used in/as

Question 4

Auto-transformer is used in the transmission and distribution systems

Question 5

A 2 KVA, 200 / 2000 V single phase transformer is converted into 2000 / 2200 V auto-transformer, then the KVA rating of the new transformer will be

Question 6

The following is the apparent disadvantage of auto transformer as compared to two-winding transformer

Question 7

Transformer is kept in oil tank to:

Question 8

A 10KVA auto transformer, turn ratio is 0.4. Find the power transferred inductively

Question 9

A 2000/200 V 1-ϕ two winding transformer having the % impedance is 8%. Now it is connected as auto transfere for stepping up the voltage from 2000 to 2200 V Find the % impedence of auto transformer?

Question 10

Neglecting losses, if the power transformed inductively is equal to power transformed conductively in an auto-transformer, then the secondary to primary ratio of transformer is

226 attempts
1 upvote
1 comment

Tags :

AE & JE Exams

Nov 30AE & JE Exams