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Questions and Answers
What is the condition for minimum losses to occur?
What is the condition for minimum losses to occur?
- Power factor is leading
- Q = 1
- Q = 0 (correct)
- Current density is maximum
What is the formula to calculate the percentage reduction in losses when the power factor is improved?
What is the formula to calculate the percentage reduction in losses when the power factor is improved?
- (Original power factor / Improved power factor)^2 × 100
- (Original power factor / Improved power factor) × 100
- (1 - (Original power factor / Improved power factor)^2) × 100 (correct)
- (1 - Original power factor / Improved power factor) × 100
What is the relationship between the current density and the cross-sectional area of a conductor?
What is the relationship between the current density and the cross-sectional area of a conductor?
- Current density is directly proportional to the cross-sectional area
- Current density is inversely proportional to the cross-sectional area (correct)
- Current density is independent of the cross-sectional area
- Current density is proportional to the square root of the cross-sectional area
What happens to the load current when the power factor is improved to a higher value?
What happens to the load current when the power factor is improved to a higher value?
What is the formula to calculate the percentage reduction in conductor cross-sectional area when the power factor is improved?
What is the formula to calculate the percentage reduction in conductor cross-sectional area when the power factor is improved?
What is the effect of low power factor on the available useful power?
What is the effect of low power factor on the available useful power?
What is the relationship between the reactive power and the useful power?
What is the relationship between the reactive power and the useful power?
What is the benefit of improving the power factor in terms of system capacity?
What is the benefit of improving the power factor in terms of system capacity?
What is the unit of measurement for the capacity of a system or apparatus?
What is the unit of measurement for the capacity of a system or apparatus?
What is the effect of power factor correction on the system?
What is the effect of power factor correction on the system?
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