A single phase transformer is wound with 220 turns on the primary and 40 turns on the secondary. The maximum value of core flux is 45mWb and the frequency is 50Hz. Determine the primary and Secondary

A single phase transformer is wound with 200 turns on the primary and 60 turns on the secondary. The maximum of core flux is 12.5mWb and the frequency is 50Hz determine the - primary and Secondary voltage.

555v and 166.5V

A single phase transformer is wound with 750 turns on the primary and 100 turns on the secondary. Determine the primary voltage of the secondary voltage is 32v.

240v

A 240/20v single phase transformer has 480 turns on the primary. Determine the required number of turns on the secondary.

40

A single phase transformer has 500 turns on the primary and 250 turns on the secondary. If th primary is 5A, determine the value of the secondary current.

10 Signup and view all the answers

What is the secondary current

4A Signup and view all the answers

What is the transformation ratio

5:1 Signup and view all the answers

What is the primary voltage

240v Signup and view all the answers

What is the primary current

800mA Signup and view all the answers

A single phase 1000/250V, Transformer is rated at 10kVA. Determine the full load secondary current.

40A Signup and view all the answers

A three phase, 11,000/415 transformer is rated at 500kVA. Determine the full load secondary current.

695.6A Signup and view all the answers

The 42/52V single phase transformer used in the practical assignments of this module are rated at 100VA. Determine the full load secondary current, given the transformers are designed to deliver 24V at 50Hz

4.17A Signup and view all the answers

Determine the full load secondary current of the 33/11kV, 1,000kVA 3 phase transformer.

52.5A Signup and view all the answers

A 240/32V single phase transformer takes a no load current of 0.8A at a power factor of 0.1 lag. Determine the primary current and power factor of the transformer supplies a load current of 35A at unity power factor

84.3, 0 and 4.67A Signup and view all the answers

A 240/110V single phase transformer takes a no load current of 2A at a power factor of 0.9 lag. Determine the primary current and power factor if the transformer supplies a load current of 15A at power factor of 0.85 lag

84.8, 31.8 and 6.88 Signup and view all the answers

The open circuit secondary voltage of a transformer is 250V and at full load the voltage drops to 244.5V. Determine the percentage regulation.

2.2% Signup and view all the answers

A step down transformer with an open circuit ratio of 6600/415V has a regulation of 3.14% at full load. What is the secondary terminal voltage of the transformer at this load?

402V Signup and view all the answers

A 5MVA, 33/11kV transformer is tested with the secondary short circuited. A voltage of 1.65kV is required to cause full load current to flow. Determine the transformer (a) rated primary current. (b) Impedance (c) percentage Impedance

87.47A, 18.86 ohms and 5% Signup and view all the answers

A three phase 11kV/430V delta/star transformer is rated at 450kVA and has a Z% of 5% (a) find the rated secondary line current. (b) Find the prospective short circuit current of the transformer.

603.9A and 12.08kA Signup and view all the answers

A three phase distribution transformer supplies 675kW at full load. If the input power to the transformer at this load is 695kW, determine the efficiency of the transformer.

97.12% Signup and view all the answers