Learn more about our help with Assignments: Electric Circuits
Search & Filtering
Electric Circuits
A 415V to 11 kV transformer has a rating of 200 kVA. The winding
resistance and leakage reactance when referred to the primary are 0.014 ?
and 0.057 ohms respectively.
(a) Determine the % regulation of the transformer at 0.8 power factor lagging.
(b) In designing a particular 415V to 11 kV, 200 kVA transformer, the
primary winding resistance is to be 10 m?. Find the maximum winding
resistance of the secondary winding if the transformer is to have 2%
regulation at unity power factor
resistance and leakage reactance when referred to the primary are 0.014 ?
and 0.057 ohms respectively.
(a) Determine the % regulation of the transformer at 0.8 power factor lagging.
(b) In designing a particular 415V to 11 kV, 200 kVA transformer, the
primary winding resistance is to be 10 m?. Find the maximum winding
resistance of the secondary winding if the transformer is to have 2%
regulation at unity power factor
Electric Circuits
A 415V to 11 kV transformer has a rating of 200 kVA. The winding
resistance and leakage reactance when referred to the primary are 0.014 ?
and 0.057 ohms respectively.
(a) Determine the % regulation of the transformer at 0.8 power factor lagging.
(b) In designing a particular 415V to 11 kV, 200 kVA transformer, the
primary winding resistance is to be 10 m?. Find the maximum winding
resistance of the secondary winding if the transformer is to have 2%
regulation at unity power factor
resistance and leakage reactance when referred to the primary are 0.014 ?
and 0.057 ohms respectively.
(a) Determine the % regulation of the transformer at 0.8 power factor lagging.
(b) In designing a particular 415V to 11 kV, 200 kVA transformer, the
primary winding resistance is to be 10 m?. Find the maximum winding
resistance of the secondary winding if the transformer is to have 2%
regulation at unity power factor
Electric Circuits
Given only a 30 Ohm and one 50 Ohm resister, list all possible values of resistance that can be obtained.
Electric Circuits
A student carried out an experiment to verify the vibration of current through an unnamed material through the p.d across it ends. He obtained the following results
Pd/v 0.50 1.00 2.00 3.00 4.00
Current/A 0.07 1.10 0.14 0.17 0.20
Questions
a) Plot a graph of p.d(vertical axis) against current (horizontal axis)
b) Use the graph to find the p.d across the material when the current is 0.81Amperes and hence determine the resistance of the material.
Pd/v 0.50 1.00 2.00 3.00 4.00
Current/A 0.07 1.10 0.14 0.17 0.20
Questions
a) Plot a graph of p.d(vertical axis) against current (horizontal axis)
b) Use the graph to find the p.d across the material when the current is 0.81Amperes and hence determine the resistance of the material.
