--%>
Assignment Help - homework help

Transformer draw current

Why does a practical transformer draw certain current whenever its secondary winding is open?

E

Expert

Verified

Transformer practically draws certain current whenever its secondary winding is open due to primary circuit and this current will generate core losses.

   Related Questions in Electrical Engineering

  • Q : Frequency modulation What is meant by

    What is meant by the term frequency modulation?

    		•
  • Q : Find out secondary voltage and number

    A step-down transformer that operating from a 50Hz mains supply of 220 Volt rms, is used to give a decrease voltage to a secondary power supply. The final delivers 400 Watt of power to a load consisting of an equivalent resistance of 10?. The transformer should have a

    		•
  • Q : What is time invariant systems Explain

    Explain what is meant by the term time invariant systems?

    		•
  • Q : Calculate the radius of the former of a

    The coil of a relay has 3000 turns wound upon a former having a metal core of relative permeability 8000 and is fed along with a current of 250mA. If the coil have to produce a total internal flux of 0.5Wb and the former include a length of 8cm, calculate the radius o

    		•
  • Q : Difference between the Piconet and

    Illustrate the difference between the Piconet and Scatternet?

    		•
  • Q : Define CMRR of recording system and

    The instrumentation amplifier demonstrated below is to be used such as the front-end phase of an ECG recording system. The ECG electrodes consist of a nominal impedance of 20k, along with a mismatch of up to 5k among them. All of the operational amplifiers include a m

    		•
  • Q : Problem on electric power The sketch

    The sketch illustrates a common consumer product termed as Water Pik. This device uses a motor to drive a piston pump that produces a jet of water (diameter d = 3 mm, temperature T = 10 °C) with a speed of 25 m/s. Find out the minimum electric power in watts which is needed by the device.

    		•
  • Q : KDD and steps involved in KDD process

    Explain the term KDD. Write down the steps that are involved in KDD process.

    		•
  • Q : Calculate the maximum thickness of the

    Excess minority carriers are injected within a thin slice of doped semiconductor of uniform cross-sectional region and are permitted to diffuse across the material. There diffusion coefficient for the material is 50cm2s-1 as well as the minority

    		•
  • Q : Mode 3 of 8051 serial port Explain what

    Explain what is the mode 3 of 8051 serial port?

    		•