Atmospheric pressure is equal to :
A. 1.013 bar
B. 760mm of Hg
C. 101.3KN/m2
D. All of these
Ball valves are commonly used to :
A. throttle flow
B. check flow
C. change flow direction
D. start/stop flow
Which tool is used to measure gap size in a rough alignment?
A. Inside calliper
B. Dial indicator
C. Feeler gage
D. Measuring tape
The part of the coupling that actually transmits power and rotation from one shaft to the other shaft is :
A. gap
B. hub
C. key
D. driver
The stress developed in a material at breaking point in extension is called :
A. Breaking stress
B. Fracture stress
C. Yield point stress
D. Proof stress
Which is not correct statement about effect of sulphur in fuel :
A. it has heating value
B. it helps in electrostatic precipitation of ash in flue-gases
C. it leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low
D. it erodes furnace walls
E. none of the above
Pick up wrong statement about desired properties of a good fuel :
A. high calorific value
B. produce minimum smoke and gases
C. ease in storing
D. high ignition point
E. ecomomical
Thermal efficiency of a thermal power plant is of the order of :
A. 15%
B. 20%
C. 30%
D. 45%
E. 60%.
The radius of a dished head is taken approximately as :
A. one-fourth
B. half
C. one
D. two
E. three
