Recap the previous session 6

A normally open contact will ________ when its de-energized and ________ when its bit is energized:

• Close, Open

• Closed, Close

• Open, Open

• Open, Close

The main switch used for Amatrol motor control lab is known as:

• Push button

• Drum switch

• Safety switch

• Selector switch

Which of the following switches requires a holding contact?

• Safety switch

• Push button

• Drum switch

• Selector switch

The motor speed is measured using an instrument called:

• Spectrometer

• Tachometer

• Torquemeter

• Luxmeter

The term _________ describes any control operation in which a function, motion, or operation can be caused either to occur (lock-in) or to be prevented from occurring (lock-out), simultaneously with another function, motion, or operation.

• overload

• lock

• interlock

• relay

The motor type of the one used in the Amatrol motor control lab is.

• single phase induction motor

• three phase induction motor

• slip ring three phase motor.

• Synchronous three phase motor

Each horizontal line Ladder Diagram is referred to as:

• Group

• Period

• Row

• Rung

The _________ PB switch serves to initiate a run condition of the motor and must be wired in parallel with a set of _________ auxiliary contacts on the motor starter to seal in the start action.

 

• NO Start; NC

• NC Start, NO

• NC Start, NC.

• NO Start; NO

The voltage across the safety switch terminals (L1 L2) is approximately.

• 400 milli volt

• 380 milli volt

• .35 KV

• .380 volt

The current rating of the recent activity which has been done at Amatrol motor control lab was approximate.

• fifty times 10 milli ampere

• A fifty milli ampere

• A unity ampere

• A unity milli ampere