Podcast
Questions and Answers
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.
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.
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.
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.
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.
Signup and view all the answers
What is the secondary current
What is the secondary current
Signup and view all the answers
What is the transformation ratio
What is the transformation ratio
Signup and view all the answers
What is the primary voltage
What is the primary voltage
Signup and view all the answers
What is the primary current
What is the primary current
Signup and view all the answers
A single phase 1000/250V, Transformer is rated at 10kVA. Determine the full load secondary current.
A single phase 1000/250V, Transformer is rated at 10kVA. Determine the full load secondary current.
Signup and view all the answers
A three phase, 11,000/415 transformer is rated at 500kVA. Determine the full load secondary current.
A three phase, 11,000/415 transformer is rated at 500kVA. Determine the full load secondary current.
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
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
Signup and view all the answers
Determine the full load secondary current of the 33/11kV, 1,000kVA 3 phase transformer.
Determine the full load secondary current of the 33/11kV, 1,000kVA 3 phase transformer.
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
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
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
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
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.
The open circuit secondary voltage of a transformer is 250V and at full load the voltage drops to 244.5V. Determine the percentage regulation.
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?
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?
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
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
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.
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.
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.
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.
Signup and view all the answers
