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.

29) In a D.O.L. starter a NVC is connected across a phase and neutral of a 3-phase, 415 V, 50 Hz supply and it works normally. What is the rating of NVC ?