Q1: A single-phase transformer with a ratio of 440/110-V...

Name: Q1: A single-phase transformer with a ratio of 440/110-V takes a no-load current of 5A at 0.2 power factor lagging. If the secondary supplies a current of 120 A at a p.f. of 0.8 lagging. Calculate (i) the current taken from the supply (ii) the core loss. Draw the phasor diagram.
Uploaded: 2023-09-14T12:18:58-08:00
Duration: 4 min 24 s
Channel: Adi S
Description: Q1: A single-phase transformer with a ratio of 440/110-V takes a no-load current of 5A at 0.2 power factor lagging. If the secondary supplies a current of 120 A at a p.f. of 0.8 lagging. Calculate (i) the current taken from the supply (ii) the core loss. Draw the phasor diagram.

Q1: A single-phase transformer with a ratio of 440/110-V takes a no-load current of 5A at 0.2 power factor lagging. If the secondary supplies a current of 120 A at a p.f. of 0.8 lagging. Calculate (i) the current taken from the supply (ii) the core loss. Draw the phasor diagram.

A 230/110 V single-phase transformer has a core loss of 100 W. If the input under no-load condition is 400 VA, find core loss current, magnetizing current, and no-load power factor angle. 2. A single-phase, 50 kVA, 2300/230 V, 50 Hz transformer is connected to a 230 V supply on the secondary side, the primary being open. The meter indicates the following readings: Power = 230 watt, Voltage = 230 V, Current = 65 A. Find the core loss: iloss component of the current; iimagnetizing current. Draw the phasor diagram for this condition. 3. A 230 V, 50 Hz transformer has 200 primary turns. It draws 5 A at 0.25 p.f lagging at no-load. Determine: the maximum value of flux in the core; the core loss; the magnetizing current; the exciting resistance and reactance of the transformer. Also, draw its equivalent circuit.

Adi S.

Question

Q1: A single-phase transformer with a ratio of 440/110-V takes a no-load current of 5A at 0.2 power factor lagging. If the secondary supplies a current of 120 A at a p.f. of 0.8 lagging. Calculate (i) the current taken from the supply (ii) the core loss. Draw the phasor diagram.

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