Electrical Engineering MCQ on Transformer
Contents
- 1 No-load current in a transformer
- 2 The winding of the transformer that has less cross-sectional area
- 3 During open circuit test of a transformer
- 4 The noise happening because of vibrations of laminations set by magnetic forces, is termed as
- 5 The major reason for the generation of harmonics in a transformer could be
No-load current in a transformer
No-load current in a transformer
- Lags behind the voltage by about 15°
- Lags behind the voltage by about 75°
- Leads the voltage by about 15°
- Leads the voltage by about 75°
Correct answer: 2. Lags behind the voltage by about 75°
The winding of the transformer that has less cross-sectional area
The winding of the transformer that has less cross-sectional area
- High voltage winding
- Low voltage winding
- Primary winding
- Secondary winding
Correct answer: 1. High voltage winding
During open circuit test of a transformer
During open circuit test of a transformer
- Primary is supplied current at reduced voltage
- Primary is supplied full-load current
- Primary is supplied rated kVA
- Primary is supplied rated voltage
Correct answer: 4. Primary is supplied rated voltage
The noise happening because of vibrations of laminations set by magnetic forces, is termed as
The noise happening because of vibrations of laminations set by magnetic forces, is termed as
- Boo
- Hum
- Magnetostriction
- Zoom
Correct answer: 2. Hum
Read the article on: Humming in transformers
The major reason for the generation of harmonics in a transformer could be
The major reason for generation of harmonics in a transformer could be
- Fluctuating load
- Mechanical vibrations
- Poor insulation
- Saturation of core
Correct answer: 4. Saturation of core