Advertisements
Advertisements
Question
In an ideal transformer, an output of 66 kV is required when an input voltage of 220 V is available. If the primary has 300 turns, how many turns should the secondary have?
Advertisements
Solution
`E_p = 220 V `
`E_p = 66 kV = 66 xx 10^3 V`
`N_p = 300 (E_p)/(E_s) = (N_p)/(N_s)`
Ns = Number of turn in secondary
⇒ `220/(66xx10^3) = 300/(N_s)` ⇒ Ns = 90000 turns
APPEARS IN
RELATED QUESTIONS
State the principle on which transformer works.
Mention various energy losses in transformer device
Which coil of a step up transformer is made thicker and why?
Complete the following sentence :
……… energy is converted into …………energy by an electric motor.
For what purpose are the transformers used? Can they be used with a direct current source?
The input and output voltages of a transformer are 220 V and 44V respectively. Find the current in input circuit if the output current is 2 A.
A transformer lowers e.m.f. from 220 V to 15 V. If the number of turns in primary are 3520, how many turns are in the secondary coil?
Find out the phase relationship between voltage and current in a pure inductive circuit.
A step-up transformer has 300 turns of primary winding and 450 turns of secondary winding. A primary is connected to 150 V and the current flowing through it is 9A. The current and voltage in the secondary are
In a transformer, number of turns in the primary coil are 140 and that in the secondary coil are 280. If current in primary coil is 4 A, then that in the secondary coil is ______.
