1. A steel containing 0.8% carbon is known as ?

eutectoid steel

hyper-eutectoid steel

hypo-eutectoid steel

none of these

Answer: eutectoid steel

Explanation:


2. The standard length of the shaft is ?

5m

6m

7m

all of these

Answer: all of these

Explanation:


3. The metal suitable for bearings subjected to light loads is ?

silicon bronze

white metal

monel metal

phosphor bronze

Answer: phosphor bronze

Explanation:


4. For circumferential joint in boilers, the type of joint used is ?

butt joint with single cover plate

butt joint with double cover plate

lap joint with one ring overlapping the other

any one of the above

Answer: lap joint with one ring overlapping the other

Explanation:


5. A bolt is designed on the basis of .......... with a large factor of safety ?

direct tensile stress

direct compressive stress

direct bending stress

direct shear stress

Answer: direct tensile stress

Explanation:


6. A rivet is specified by ?

shank diameter

length of rivet

type of head

length of tail

Answer: shank diameter

Explanation:


7. The longitudinal joint in boilers is used to get the required ?

length of boiler

diameter of boiler

length and diameter of boiler

efficiency of boiler

Answer: diameter of boiler

Explanation:


8. A feather key is generally ?

loose in shaft and tight in hub

tight in shaft and loose in hub

tight in both shaft and hub

loose in both shaft and hub

Answer: tight in shaft and loose in hub

Explanation:


9. A taper key which fits half in the key way of the hub and half in the key way of shaft, is known ?

sunk key

flat saddle key

hollow saddle key

tangent key

Answer: sunk key

Explanation:


10. Rankine's theory is used for ?

brittle materials

ductile materials

elastic materials

plastic materials

Answer: brittle materials

Explanation: