Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET20243 May 2024Evening ShiftPhysicsAlternating CurrentActual

A transformer is used to set up an alternating e.m.f. of 220 V to 4.4 kV to transmit 6.6 kW of power. The primary coil has 1000 turns. The current rating of the secondary coil is (Transformer is ideal)

Options

  1. A0.8 A
  2. B1.2 A
  3. C1.5 A
  4. D1.8 A

Correct answer

C. 1.5 A

Step-by-step solution

Number of turns of in primary and secondary coil be N _ p and N _ s , For ideal transformer, aligned & N_s N_p = V_s V_p & N_s= 4.4 10^3 220 1000=2 1.0^4 aligned Power supply at primary coil is given as, aligned & P = I _ p ~V _ p =6.6 10^3 ~V & I _ p = 6.6 10^3 ~V 220 =30 ~A aligned For ideal transformer, I_s I_p = N_p N_s I _ s = 10^3 2 10^4 30=1.5 ~A

Practice Alternating Current on Quantrex Academy →

More from Alternating Current

An electronic device operates at 2 MHz. The oscillating circuit has an inductance 20 10⁻⁵ H. What is the capacitive reactance of the resonant circuit? 2026When a current of 2.5 A passes through the primary coil of a transformer of 200 number turns, the magnetic flux linked with the secondary coil having 400 turns is 600 10⁻⁶ T m^2 . 2026In a given circuit, the instantaneous values of the alternating voltage and current are V = 0.5 (80 t + 3 ) volt and I = 0.5 (80 t) ampere respectively. Find the average power cons 2026A source of alternating emf = ₀ ( t) is connected to a capacitor. Then the instantaneous current in the circuit is: 2026If wattless current flows in an AC circuit, then the circuit is: 2026A solenoid having resistance R = 60 and inductance L = 0.4 H is connected to an AC source V = 100 2 200t . Find the maximum current. 2026In a circuit containing a pure resistor connected to an AC source, 2026A light bulb rated 100 W is connected to an AC source of 220 V, 50 Hz. The rms current through the bulb is 2026 Full Alternating Current list All MHT CET PYQs