The primary reason for low power factor is owing to installation of ________.

Causes of low power factor:

• Most of the AC motors are of induction type (1φ and 3φ induction motors) which have a low lagging power factor
• These motors work at a power factor which is extremely small on light load (0.2 to 0.3) and rises to 0.8 or 0.9 at full load
• Arc lamps, electric discharge lamps and industrial heating furnaces operate at a low lagging power factor
• The load on the power system is varying; being high during morning and evening and low at other times
• During low load period, the supply voltage is increased which increases the magnetization current, this results in the decreased power factor