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A step down transformer converts transmi...

A step down transformer converts transmission line voltage from 2200 V to 220 V. Primary coil is having 5000 turns. Efficiency of transformer is 90% and output power is 8 kW. Evaluate number of turns in secondary coil and input power.

A

5000

B

50

C

500

D

5

Text Solution

Verified by Experts

The correct Answer is:
C
Given, `V_(p)=2200" V","V"_(s)=220" V"`
`N_(p)=5000, N_(s)=?`
`:." "(V_(p))/(V_(s))=(N_(p))/(N_(s))`
`implies" "(2200)/(220)=(5000)/(N_(s))`
`implies" "N_(s)=500`
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