MCQs of Transformers (Electrical Machine - I - 3140913)

Showing 11 to 20 out of 155 Questions

11.

Core type transformers have, LV and HV windings are arranged such that

(a)	Half LV near the core and half HV outside LV on each limb
(b)	LV on one limb and HV on the other
(c)	Half LV outside the core and half HV inside LV on each limb
(d)	LV and HV windings are sandwiched

12.

The shell type transformers have, LV and HV windings are arranged such that

(a)	Half LV near the core and half HV outside LV on each limb
(b)	LV on one limb and HV on the other
(c)	Half LV outside the core and half HV inside LV on each limb
(d)	LV and HV windings are sandwiched

13.

Which of the following is not a part of the transformer?

14.

Percentage leakage reactance in core type construction, compared to shell type construction of the core, is

15.

The ideal shape for the section of the core is

16.

If breather of a transformer is blocked

(a)	The cooling of the transformer will be affected.
(b)	Oil deteriorates.
(c)	Buchholz relay will be operated.
(d)	The color of the silica gel will become pink.

17.

Buchholz relay is provided on the transformer to

(a)	indicate minor faults inside the transformers.
(b)	indicate minor & major faults and isolate the transformer during a major fault.
(c)	isolate the transformer during a major fault.
(d)	indicate major fault inside the transformers.

18.

The primary and secondary winding of the transformer are linked to each other by

19.

The working principle of the transformer depends upon

(a)	Ohms law.
(b)	Lenz’s Law.
(c)	Fleming’s left-hand rule.
(d)	Faraday’s Law of Electromagnetic Induction.

20.

The primary and secondary windings of an ordinary 2-winding transformer always have

Showing 11 to 20 out of 155 Questions