1. A valve stem tends to stick in extreme temperature conditions due to:
(A) valve clearance
(B) damaged valve seat
(C) gumming deposits
(D) None of these
2. Valve bending occurs due to:
(A) high temperature
(B) low temperature
(C) incorrect valve timing
(D) None of these
3. A cause of valve breakage may be:
(A) burnt valve
(B) excessive stem to guide clearance
(C) low temperature
(D) Both a & b
4. The _______ makes sure of synchronizing the camshaft and crankshaft:
(A) timing belt
(B) timing chain
(C) Both a & b
(D) None of these
5. _______ is one of the main causes of timing belt drive failure:
(A) lack of lubrication
(B) overspeed
(C) misalignment
(D) None of these
6. _____ cams or lobes are machined on the camshaft for each cylinder:
(A) One
(B) Two
(C) Four
(D) None of these
7. A symmetrical lobe has identical opening and closing:
(A) ramp
(B) nose
(C) heel
(D) None of these
8. The nose is designed to keep the _________ for a certain length of time:
(A) valve open
(B) valve closing
(C) Both a & b
(D) None of these
9. Valve clearance is also called:
(A) guide clearance
(B) side clearance
(C) tappet clearance
(D) None of these
10. If the clearance is correct, the blade is a _________ fit between the two parts:
(A) close sliding
(B) free sliding
(C) not sliding
(D) None of these
11. The causes of check engine light is:
(A) dirty oil
(B) incorrect valve timing
(C) a faulty Variable Valve Timing (VVT) system
(D) None of these
12. Due to a faulty VVT switch, engine:
(A) stumbles
(B) overspeed
(C) shuts down
(D) None of these