What is name of the gear unit of the lathe which consists of three gears, each having same number of teeth?

A. Spindle gear

B. Fixed stud gear

C. Change gear unit

D. Tumbler gear unit

Correct Answer: Tumbler gear unit

Chemical Hazards under occupational health hazards are
* Inflammable
* Explosive
* Toxic
* Corrosive
* Radioactive