24) Thermal overload relays are _____ than magnetic overload relays.

25) Which of the following reduces vibration, chattering, noise, wear and heat in the armature of a starter ?

26) Minimum requirement of contacts in a 3-phase D.O.L. starter is :

27) NVC used in a starter is meant to protect the motor against :

28) No-load current of an induction motor is approximately _____ percent of full-load current.