Machine Design - Day 3

1. One of the following materials is not mentioned for wire rope pulley/sheave applications.
A. plastic
B. iron
C. paper
D. copper alloy


2. In greater quantity, this element is harmful to the molten ferrous metal.
A. silicon

B. aluminum

C. oxides

D. sulfur

3. Some experiments made at Cornell University showed that experience mechanic could break a _____ bolt due to nut tightening.

A. 3/8 inch

B. 5/8 inch

C. 1/2 inch

D. 7/16 inch

4. The arc of action to circular pitch or length of action to base pitch.

A. approach ratio

B. contact ratio

C. arc of action

D. arc of approach

5. The only accredited National Organization for Mechanical Engineers.

A. PME

B. NME

C. POME

D. PSME

6. Which of the following product of combustion that has a property of resilience?

A. rubber

B. grease

C. graphite power

D. graphite electrode

7. The brittleness in steel at elevated temperature is:

A. hard drawn

B. red shortness

C. cold lap

D. residual stresses

8. Common defects encountered in the foundry shop steel casting operating and also in welding practices.

A. cracks

B. cold shot

C. parting line

D. blow/pin holes

9. The minimum recommended worm pitch diameter is 1/4 in. and the maximum is _____ in.

A. 1 3/4 in

B. 2 3/4 in

C. 3 in

D. 2 in

10. To prevent engine vibration to affect the surrounding area, it is a standard practice to isolate the engine and its foundation by at least _______ mm.

A. 20

B. 30

C. 25

D. 36

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