1. ________ bearing need no lubrication as it has self lubrication properties ?

White metal

Teflon

Nylon

Copper

Answer: Nylon

Explanation:


2. Which of the following material is used as bearing metal for light loading and low speed application ?

white metal

cast iron

sintered alloy

copper

Answer: cast iron

Explanation:


3. The load applied, parallel to the axis of the bearing, is called as ?

centre load

shear load

bending load

thrust load

Answer: thrust load

Explanation:


4. The construction feature which makes tapered roller bearings unique is that races are ?

attachable

separable

self-aligning

none of the above

Answer: separable

Explanation:


5. Which of the following friction occurs in an UN lubricant general bearing ?

dry friction

rolling friction

fluid friction

sliding friction

Answer: dry friction

Explanation:


6. Which of the following is a type of anti friction bearing ?

split bearing

ball bearing

solid bearing

bush bearing

Answer: ball bearing

Explanation:


7. When the load of bearing is carried by direct surface to surface contact is called ?

fuel film condition

boundary condition

dry condition

none of the above

Answer: dry condition

Explanation:


8. The contact angle of a particle journal with the bearing is ?

90°

105°

120°

135°

Answer: 120°

Explanation:


9. Ball bearing are used for ________ ?

misaligned axis of shaft

heavy load and large shaft diameter

low and medium radial loads

high speed application

Answer: low and medium radial loads

Explanation:


10. A needle bearing is a roller bearing with rollers whose length are at least ________ times their diameter ?

two

four

six

eight

Answer: four

Explanation: