Question

A group of students while coming from the

school noticed a box marked “Danger H.T.

2200 V” at a substation in the main street. ey

did not understand the utility of a such a high

voltage, while they argued, the supply was only

220 V. ey asked their teacher this question

the next day. e teacher thought it to be an

important question and therefore explained to

the whole class.

Answer the following questions :

(i) What device is used to bring the high

voltage down to low voltage of ac current and

what is the principle of its working?

(ii) Is it possible to use this device for bringing

down the high dc voltage to the low voltage?

Explain.

(iii) Write the values displayed by the students

and the teacher.

Answer 1

Answer:

hello how are you

Explanation:

peleas follow me

Answer 2

Explanation:

QUESTION :-

_________

A group of students while coming from the school noticed a box marked “Danger H.T. 2200 V” at a substation in the main street. ey did not understand the utility of a such a high voltage, while they argued, the supply was only 220 V. ey asked their teacher this question the next day. e teacher thought it to be an important question and therefore explained to the whole class.

(i) What device is used to bring the high voltage down to low voltage of ac current and what is the principle of its working?

(ii) Is it possible to use this device for bringing down the high dc voltage to the low voltage?

Explain.

(iii) Write the values displayed by the students and the teacher.

ANSWER :-

_________

(i) Transformer is a device which is used to bring the high voltage down to low voltage of ac current. It works on the principle of mutual induction of two coils in a transformer.

(ii) Transformer does not work for dc voltage. A dc current gives constant magnetic field and constant magnetic flux through the coil of fixed area of cross section. As there is no change in magnetic Flux so there is no induced emf in the coil.

(iii) The values displayed by the students are gaining knowledge and curiosity to learn new things. The values displayed by the teacher are providing good education and helpful.

__________________________________

@TheStellar♥️