ENG4216

Lock out / tag out is the procedure.

• To keep the machines in lock forever

• To put tags with names of machine parts

• To carry out maintenance jobs safely

• To get permission for maintenance job

If you see damaged a wire during maintenance job then what action shall you take.

• Replace the damaged wire with any wire

• Ignore the damage and cover it with other wires

• Just put a warning label

• Repair it as per the manufacturer standards without reducing the protection

What preparations must be made before work to handle any emergency?

• Locate nearest first aid and firefighting equipment

• Locate nearest bathroom

• Locate nearest mall

• Locate nearest cafeteria

Work permit is a document used to;

• Estimate the cost of any maintenance

• Take permission to start any maintenance work

• Ensure the availability of spare parts needed for maintenance

• Describe the skills of the technicians doing maintenance work

How to get authorization to carry out any maintenance work in industry?

• By taking verbal permission

• By asking your supervisor on email

• By using work permit form

• By asking any colleague

A step up transformer;

• Decrease the voltage at output

• Keep the voltage same at input and output

• Increase the voltage at output

• Changes the voltage all the time

Basic construction of transformer contains three parts, which are;

• Primary winding, Secondary Winding and Rotor

• Rotor, Stator and Winding

• Primary winding, Secondary Winding and Iron core

• Armature, Shaft and bearings

A transformer used to transfer complex signals, containing large number of frequencies, form one circuit to another is called;

• Signal Transformer

• Power Transformer

• Auto Transformer

• Instrument Transformer

Which of the following turns ratio is considered a “step down” transformer?

• 2 : 3

• 2 : 5

• 10 : 1

• 1 : 1

Power loss caused by magnetism that remains in a material after the magnetizing force has been removed is called;

• Eddy current loss

• Hysteresis loss

• Resistive loss

• Dielectric loss