Multiple Choice Question (MCQ)
Question: Which part in drilling machine is to achieve different speed?
A.
Flat pulley
B.
Jockey pulley
C.
Stepped pulley
D.
Fast and loose pulley
Correct Answer: Stepped pulley
Explanation
A positive plate of a lead-acid battery is brown in colour. A negative plate of a lead-acid battery is grey in colour. For each plate, there is a supporting grid made of an alloy of lead and antimony.