This is Automobile Engineering MCQ page-17

Automobile Engineering MCQ page-17
Question 161:- Valve overlap occurs between (a) intake and compression strokes (b) compression and power strokes (c) power and exhaust strokes (d) exhaust and intake strokes.

Question 162:- The engine requires overhauling in case of (a) poor compression (b) excessive consumption of lubricating oil (c) mechanical failure (d) all of the above

Question 163:- The carbon from the cylinder head is removed with (a) water (b) caustic soda (c) scraper (d) soap

Question 164:- The warpage of cylinder head is checked with a (a) metal rule (b) vernier caliper (c) micrometer (d) dial gauge

Question 165:- The cylinder head nuts should be tightened to a torque of about (a) 15 Nm (b) 150 Nm (c) 50 Nm (d) 1500 Nm

Question 166:- Aluminized valves are never ground they have to be replaced because (a) aluminium is a costly material (b) aluminium surface is difficult to he ground (c) grinding such valves will make them corrosion prone (d) none of these.

Question 167:- The valves have to be replaced if the metal to be removed lor smoothening their end surfaces is more than (a) 0.05 mm (b) 0.5 mm (c) 1.5 mm (d) 5 mm

Question 168:- The width of the valve seat should not be kept more than (a) 0.2 mm (b) 0.5 mm (c) 1.2 mm (d) 5 mm

Question 169:- While lapping a valve, the lapping compound is applied to its (a) face (b) stem (c) guide (d) tip

Question 170:- The stem clearance in the valve guide is checked by means of a (a) metal rule (b) vernier caliper (c) micrometer (d) dial gauge