Home
Class 12
PHYSICS
A step-up transformer works on 220 V and...

A step-up transformer works on `220 V` and gives `2 A` to an external resistor. The turn ratio between the primary and secondary coils is 2 : 25. Assuming 100% efficiency, find the secondary voltage, primary current and power delivered respectively

A

`2750 V, 25 A, 5500 W`

B

`2750 V, 20 A, 5000 W`

C

`2570 V, 25 A, 550 W`

D

`2750 V, 20 A, 55 W`

Text Solution

Verified by Experts

The correct Answer is:
1
`(E_(s))/(E_(P)) = (N_(s))/(N_(p)) = (i_(p))/(i_(s)), P = E_(s) i_(s)`
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - II (C.W)|11 Videos

  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - III (C.W)|24 Videos

  • ALTERNATING CURRENT

    NARAYNA|Exercise Assertion & Reason|14 Videos

  • ATOMIC PHYSICS

    NARAYNA|Exercise LEVEL-II (H.W)|14 Videos

Similar Questions

Explore conceptually related problems

A step-up transfomer operates on a 220 volt line and supplies to load, a current of 2A. The ratio of primary and secondary winding is 1 : 25. Calculate secondary voltage, primary current and power output, if efficiency is 80%

A step up transformer operates on a 230 V line and a load current of 2 ampere. The ratio of the primary and secondary windings is 1 : 25 . What is the current in the primary?

A step - up transformer operates on 220V line and supplies 22A .The ratio of primary and secondary winding is 11:50. The output voltage in the secondary is

A slep-up transformer operates on 220 V line and supplies 2.2 A. The ratio of primary and secondary winding is 11 : 50, The output voltage in the secondary is

A step-down transformer is connected to 2400 volts line and 80 amperes of current is found to flow in output load. The ratio of the turns in primary and secondary coil is 20:1. if transformer efficiency is 100% , then the current flowing in primary coil will be

A generator supplies 100 V to the primary - coil of a transformer of 50 turns.If the secondary coil has 500 turns, then the secondary voltage is

NARAYNA-ALTERNATING CURRENT-LEVEL - I (C.W)
  1. The peak value A.C is 2 sqrt(2)A. It's apparent value will be

    Text Solution

    |

  2. Alternating current in circuit is given by I = I(0) sin 2 pi nt. Then ...

    Text Solution

    |

  3. Using an ac voltmeter, the potential difference in the electrical line...

    Text Solution

    |

  4. A mixer of 100 Omega resistance is connected to an A.C source of 200 V...

    Text Solution

    |

  5. The equation of an alternating voltage is E = 220 sin (omega t + pi //...

    Text Solution

    |

  6. A steady P.D of 10 V produces heat at a rate 'x' in resistor. The peak...

    Text Solution

    |

  7. An alternating voltage E=200sqrt(2) sin (100 t)V is connected to a 1 m...

    Text Solution

    |

  8. A 120 volt AC source is connected across a pure inductor of inductance...

    Text Solution

    |

  9. A transformer steps an A.C voltage from 230 V ot 2300 V. If the number...

    Text Solution

    |

  10. The transformer ratio of a transformer is 5. If the primary voltage of...

    Text Solution

    |

  11. A step-up transformer works on 220 V and gives 2 A to an external resi...

    Text Solution

    |

  12. A coil of self-inductance ((1)/(pi)) H is connected is series with a 3...

    Text Solution

    |

  13. A condenser of 10 mu F and an inductor of 1 H are connected in series ...

    Text Solution

    |

  14. A 100 km telegraph wire hasd capacity of 0.02 mu F//km, if it carries ...

    Text Solution

    |

  15. In an LCR series circuit the rms voltages across R,L and C are foundd ...

    Text Solution

    |

  16. In the circuit shown, a 30 V d.c. source gives a current 2.0 A as reco...

    Text Solution

    |

  17. A choke coil has negligible resistance. The alternating potential drop...

    Text Solution

    |

  18. In an AC circuit, the instantaneous values of e.m.f and current are e...

    Text Solution

    |

  19. In a black box of unknown elements (L or R or any other combination), ...

    Text Solution

    |

  20. The voltage time (V-t) graoh for triangular wave having peak value (V0...

    Text Solution

    |