A. compression ring
B. oil ring
C. scrapper ring
D. groove ring
E. leading ring
Related Mcqs:
- In loop scavenging, the top of the piston is________________?
A. flat
B. contoured
C. slanted
D. depressed
E. convex shaped - Piston rings are usually made of___________________?
A. cast iron
B. aluminium
C. phosphor bronze
D. babbitt
E. carbon steel - Piston rings are plated with chromium,cadmium or phosphate in order to__________________?
A. reduce cost
B. improve surface finish
C. prevent clogging
D. reduce wear and eliminate scuffing
E. improve heat transfer - Leakage past the piston rings and valve seats in I.C. engines with increase in speed_______________?
A. increases.
B. decreases
C. remains same
D. unpredictable
E. none of the above - In the opposed piston diesel engine, the combustion chamber is located________________?
A. above the piston (/;) below the piston
C. between the pistons
D. any when
E. there is no such criterion - Heating of dry steam above saturation temperature is known as_____________________?
A. enthalpy
B. superheating
C. supersaturation
D. latent heat
E. super tempering - The crown of the fire box is made hemispherical in order to___________________?
A. give maximum space
B. give maximum strength
C. withstand pressure inside boiler ,
D. resist intense heat in fire box
E. enable easy,manufacture - In carburettors, the top of the fuel jet with reference to the level in the float chamber is kept at_________________?
A. same level
B. slightly higher level
C. slightly lower level
D. may be anywhere
E. varies from situation to situation - The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is____________________?
A. 2.4 m
B. 3.0 m
C. 4.0 m
D. ”2.5 m
E. 5.0 m - The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be ________________?
A. 500 kg
B. 1000 kg
C. 1500 kg
D. 2000 kg
E. 4000 kg
