Automation System
Programmable controllers:

are widely used in many different industries
None of these
(a) and (c) above
are programmed using relay ladder logic
cannot perform functions other than relay logic

ANSWER DOWNLOAD EXAMIANS APP

Automation System
Stepping motors:

do not require commutators
All of these
can run both clockwise and counterclockwise
can be built to index different amounts by changing the pole configuration
can run at varying speeds

ANSWER DOWNLOAD EXAMIANS APP