1. In compression, a prism of brittle material will break (a) by forming a bulge

ID: 2995616 • Letter: 1

Question

1. In compression, a prism of brittle material will break

(a) by forming a bulge (b) by shearing along oblique plane (c) in direction perpend cular to application of load

(d) by crushing into thousands of pieces

2. 'Killed steels' are those steels

(a) which are destroyed by burning (b) which after their destruction are recycled to produce fresh steel

(d) in which carbon is completely burnt

3. Inconel is an alloy of

(a) nickel, chromium and iron (b) nickel, copper (c) nickel, chromium (d) nickel, zinc

4. Hardness of upper bainite (acicular structure) is about

(a) RC 65 (b) RC 48 (c) RC 57 (d) RC 80

5. Compressive strength of grey cast iron in tonnes/cm is of the order of

(a) 3- 5 (b) 5-7(c) 7-10 (d) 10-15

6. Which of the following is the example of lever of first order

(a) arm of man (b) pair of scissors (c) pair of clinical tongs (d) all of the above

7. Aeroplanes employ following type of compressor

(a) radial flow (b) axial flow (c) centrifugal (d) combination of above

8. A gas turbine used in air craft should have

(a) high h.p. and low weight (b) low weight and small frontal area (c) small frontal area and high h.p.

(d) high speed and high h.p.

1. (b)

2. (c)

3. (a)

4 (b)

5 (b)

6. (d)

7. (b)

8. (b)

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