261. The camshaft of a four stroke Diesel engine running at 1000 rpm will run at
(A) 500 rpm
(B) 1000 rpm
(C) 2000 rpm
(D) 4000 rpm
Answer: - 500 rpm
262. What type of bearing is used for main bearings and connecting rod bearings ?
(A) Ball bearings
(B) Plain bearings
(C) Needle roller bearing
(D) Taper roller bearing
Answer: - Plain bearings
263. The main cause for the change in engine oil viscosity is
(A) Humidity
(B) Temperature
(C) Vibration
(D) Contamination
Answer: - Temperature
264. The major contributor of Carbon monoxide is
(A) Motor vehicle
(B) Industrial processes
(C) Stationary fuel combustion
(D) None of the above
Answer: - Motor vehicle
265. The function of automobile catalytic converter is to control emissions of
(A) carbon dioxide and hydrogen
(B) carbon monoxide and hydrogen
(C) carbon monoxide and carbon dioxide
(D) carbon monoxide and nitrogen dioxide
Answer: - carbon monoxide and hydrogen
266. The operation of removing trapped air from the hydraulic braking system is known as
(A) Trapping
(B) Tapping
(C) Bleeding
(D) Cleaning
Answer: - Bleeding
267. In a four-wheel drive, the numbers of gear boxes are
(A) 1
(B) 2
(C) 3
(D) 4
Answer: - 2
268. In an engine, the temperature of the piston will be more at the
(A) Crown of the piston
(B) Skirt of the piston
(C) Piston walls
(D) Piston rings
Answer: - Crown of the piston
269. The oil pump is driven by the
(A) Camshaft
(B) Alternator shaft
(C) Crankshaft via drive belt
(D) Crankshaft directly
Answer: - Crankshaft directly
270. The function of Anti-Lock Brake System (ABS) is that is
(A) Reduces the stopping distance
(B) Minimizes the brake fade
(C) Maintains directional control during braking by preventing the wheels from locking
(D) Prevents nose dives during braking and thereby postpones locking of the wheels
Answer: - Maintains directional control during braking by preventing the wheels from locking.
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