NOCTI - National Occupational Competency Testing Institute Tools, Materials, and Equipment Questions and Answers

Question 1

In metalworking, which property describes a material's ability to be hammered, pressed, or rolled into thin sheets without breaking?

Accepted Answer

Malleability

Answer

Ductility

Answer

Hardness

Answer

Toughness

Question 2

A machinist needs to measure the outside diameter of a precision-ground shaft to the nearest ten-thousandth of an inch (0.0001"). Which of the following tools is the MOST appropriate for this level of accuracy?

Accepted Answer

Micrometer

Answer

Steel Rule

Answer

Vernier Caliper

Answer

Dial Indicator

Question 3

To minimize the risk of rounding the corners of a hexagonal fastener (a bolt or nut), which type of wrench provides the best grip by contacting all sides of the fastener head?

Accepted Answer

Box-end wrench

Answer

Adjustable wrench

Answer

Open-end wrench

Answer

Pipe wrench

Question 4

According to OSHA safety standards for bench grinders (1910.215), what is the maximum allowable gap between the tool rest and the face of the grinding wheel?

Accepted Answer

1/8 inch

Answer

1/2 inch

Answer

1/4 inch

Answer

1/16 inch

Question 5

An operator using a portable circular saw is making a long rip cut in a large sheet of plywood. The wood begins to pinch the blade mid-cut. This situation creates a high risk of what dangerous event?

Accepted Answer

Kickback

Answer

Motor burnout

Answer

Blade dulling

Answer

Circuit overload

Question 6

A technician observes that the twist drill bits they are using are producing excessive heat and squealing, and the holes are not clean. This is a primary indication that the drill bits are:

Accepted Answer

dull and need to be sharpened.

Answer

made of the wrong material.

Answer

too large for the drill.

Answer

being run at too low a speed.