Advertisements
Advertisements
प्रश्न
Find the ratio of primary and secondary currents in terms of turn ratio in an ideal transformer.
Advertisements
उत्तर
According to law of conservation of energy,
Input electrical power = Output electrical power
EpIp = EsIs
`:.E_s/E_p=I_p/I_s`
`I_p/I_s=E_s/E_p=N_s/N_p`
`=>I_p/I_s=n`
APPEARS IN
संबंधित प्रश्न
Derive an expression for ratio of e.m.f.s and currents in terms of number of turns in primary and secondary coil.
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.
How are the e.m.f in the primary and secondary coils of a transformer related with the number of turns in these coils?
What is the function of a step-up transformer?
In a series resonant RLC circuit, the voltage across 100 Ω resistor is 40 V. The resonant frequency ω is 250 rad/s. If the value of C is 4 µF, then the voltage across L is
Explain the working of the transformer.
An iron rod is placed parallel to magnetic field of intensity 2000 Am-1. The magnetic flux through the rod is 6 × 10−4 Wb and its cross-sectional area is 3 cm2. The magnetic permeability of the rod in Wb A-1m-1 is ______.
Efficiency of transformer is the ratio of ______.
What type of transformer is used in a mobile phone charger?
