1. The main bearings hold the________ in place and let rotate:
(A) camshaft
(B) crankshaft
(C) connecting rod
(D) None of these
2. The connecting rods, recall, transmit the thrust of the pistons to the:
(A) main journal
(B) small end
(C) crank pin
(D) None of these
3. The camshaft bearings support the:
(A) crankshaft
(B) camshaft
(C) rocker arm
(D) None of these
4. The part of a shaft that rotates in a bearing is called a:
(A) housing
(B) bush
(C) journal
(D) None of these
5. _______ is an ideal bearing material from the standpoint of low friction and wearability:
(A) aluminum
(B) chromium
(C) babbitt
(D) None of these
6. Precision engine bearings are built to absorb punishment and:
(A) increase power
(B) reduce wear
(C) reduce temperature
(D) None of these
7. Damages due to scoring and scarring are detected by a series of:
(A) pits
(B) scratches
(C) hot spots
(D) None of these
8. When the hydrogen burns, it leaves a residue of:
(A) fuel
(B) oil
(C) water
(D) None of these
9. Seizure is a condition in which the bearing literally seizes the shaft and stops the:
(A) engine
(B) friction
(C) both a & b
(D) None of these
10. Some types of corrosion are caused by organic acids which result from________ changes in the oil:
(A) physical
(B) metal
(C) chemical
(D) None of these
11. Wiping and burning can also be caused by_______ oil clearance:
(A) insufficient
(B) sufficient
(C) too much
(D) None of these
12. A wide and deep score pattern is caused by:
(A) hot spots
(B) scoring
(C) chips
(D) None of these