In a capacitor start motor if C₁ is the capacitance required for best starting torque and C₁ is the capacitance required for best running characteristic then:

Correct option is D

Capacitor Start Motor:
· A capacitor start motor uses a capacitor to provide a phase shift, improving the starting torque of the motor.
· During the starting phase, a higher capacitance (C1​) is required to create a larger phase shift for maximum torque.
· For the running phase, the required capacitance (C2​) is much smaller, as the motor operates efficiently with reduced reactive power.
Relationship Between C1​ and C2​:
· Starting Phase (C1​):
· A large capacitance is needed to produce the maximum starting torque.
· Running Phase (C2​):
· A smaller capacitance is needed to achieve the best running efficiency.
Thus, C1 is much larger than C2​.