A 400 V, 10 KVA transformer at 50 Hz, is operated at the frequency of – McqOptions

MCQOPTIONS

1.	A 400 V, 10 KVA transformer at 50 Hz, is operated at the frequency of 40 Hz, then the humming ___________
A.	increases
B.	decreases
C.	remains same
D.	increases to very high
Answer» B. decreases

Discussion

No Comment Found

Related MCQs

A recording of the output of the emf induced for star and delta are recorded. Then shape of the emf induced in Y-connected 3-phase transformer is non sinusoidal in nature due to ___________
While using three phase transformers, it is taken care about the third harmonics current in the system. This is present when transformer set is delta on either side.
A 400 V, 10 KVA transformer at 50 Hz, is operated at the frequency of 40 Hz, then the humming ___________
When we magnetize the ferromagnetic core of the transformer, core length_______ and it ______ when demagnetized.
If para magnetic core is used in the place of the ferromagnetic core of the transformer, then magnetostriction will ___________
If one of the transformers is removed from the bank of only delta-delta, then it behaves with 58% power delivery.
Open delta transformers can be obtained from ___________
The delta-delta connections are used in applications of ___________
The transformer which is more feasible to use in the distribution ends should be ___________
Three units of single phase transformers and one single three-phase transformer rating ___________