Advertisements
Advertisements
Question
The primary coil of a transformer has 60 turns whereas its secondary coil has 3000 turns.
If a current of 5A flows in the primary coil, how much current will flow in a load in the secondary coil? State the assumption you have made regarding the transformer, in this calculation.
Advertisements
Solution
Give that, IP = 5 A, IS = ?
`therefore "N"_"S"/"N"_"P" = "I"_"P"/"I"_"S"`
`=> 3000/60 = 5/"I"_"S"`
`"I"_"S" = 1/10`
`"I"_"S"` = 0.1 A
APPEARS IN
RELATED QUESTIONS
Write the function of a transformer.
Derive an expression for e.m.f. and current in terms of turns ratio
Find the ratio of primary and secondary currents in terms of turn ratio in an ideal transformer.
On which type of current do transformers work?
The input and output voltage of a transformer are 220 V and 44 V respectively. Find: the turns ratio.
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.
State whether true or false. If false, correct the statement.
A transformer can step up direct current.
A 220 V input is supplied to a transformer. The output circuit draws a current of 2.0 A at 440 V. If the ratio of output to input power is 0.8, then the current drawn by primary winding is ______.
A transformer is essentially an a.c. device. It cannot work on d.c. It changes alternating voltages or currents. It does not affect the frequency of a.c. It is based on the phenomenon of mutual induction. A transformer essentially consists of two coils of insulated copper wire having different numbers of turns and wound on the same soft iron core.
The number of turns in the primary and secondary coils of an ideal transformer is 2000 and 50 respectively. The primary coil is connected to a main supply of 120 V and secondary coil is connected to a bulb of resistance 0.6 Ω.
The value of current in primary coil is ______.
A transformer consisting of 300 turns in the primary and 150 turns in the secondary gives output power of 2.2 kW. If the current in the secondary coil is 10 A, then the input voltage and current in the primary coil are ______.
