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AE-JE Foundation EE : Electrical Machines Quiz -3
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Question 1
In the transformer circuit shown in the given figure, provided V1 > V2, the power transferred from primary to secondary inductively is proportional to:
Question 2
When the two windings of a transformer are connected electrically, it is called as:
Question 3
When is an Autotransformer used in transmission and distribution?
Question 4
An auto-transformer having a transformation ratio of 0.9 supplies a load of 10 kW. The power transferred inductively from primary to secondary is:
Question 5
Consider the following statements regarding the application of auto transformer.
A) To give a small boost to distribution cable to correct for the voltage drop.
B) To suit the furnace winding from 230V supply.
C) Used as auto starter to give up 100% of full load voltage to an induction motor during starting.
D) Also used where there is an isolation.
Which of the following statement is/are correct?
A) To give a small boost to distribution cable to correct for the voltage drop.
B) To suit the furnace winding from 230V supply.
C) Used as auto starter to give up 100% of full load voltage to an induction motor during starting.
D) Also used where there is an isolation.
Which of the following statement is/are correct?
Question 6
Autotransformer can only be connected in
Question 7
Auto transformer can’t be used in/as
Question 8
What is the transformation ratio In an autotransformer if the power transferred inductively is equal to the power conducted through?
Question 9
Autotransformer is used as economical when its transformation ratio is?
Question 10
in a step down autotransformer, if the transformation ratio increases then the saving of copper?
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AE & JE ExamsJul 21AE & JE Exams