Option 1: Operating cost
Option 2: Temperature rise
Option 3: Voltage drops
Option 4: All option is correct
Correct Option: 4
Explanation
Power losses in electrical machines lead to higher operating costs, temperature rise, and voltage drops. Therefore, it is essential to consider power losses in electrical machines. A machine with lower efficiency will have more losses, leading to higher operating costs. Power losses cause heating of the machine, resulting in temperature rise. Voltage drop is associated with ohmic losses.