A vertical plate and a horizontal plate are suspended in an open room. Both are heated to the same temperature. Which one will cool first?
BARC,
11 244301. A single acting stage air compressor with 6% of clearance volume compresses air from 1.2 bar to 6.5 bar. Find the change in volumetric efficiency if the exponent of expansion process changes from 1.55 to 1.72.
2 41792. Dry saturated steam at 3.5 bar is expanded through a convergent nozzle to 2.2 bar. The exit area is 5 sq. cm. Calculate the exit velocity and mass flow rate, assuming isentropic expansion and super saturated flow. b) A cast iron cylinder head is fastened to a cylinder of 750mm bore with 12 stud bolts. The maximum pressure inside the cylinder is 3 Mpa. The stiffness of part is thrice the stiffness of the bolt. What should be the initial tightening load so that the point is leak proof at maximum pressure? Also choose a suitable bolt for the above application 2 The propeller shaft of a marine engine is to transmit 600 kW at 1200 rpm, without a significant bending. The efficiency of the propeller is 88% at 32 knots ( 1 knot = 1085 km/hr). If the slenderness ratio is less than 50 and the permissible shear stress should not exceed 65 Mpa. Determine the diameter of shaft. 3 A semi-elliptic leaf spring consists of two extra full-length leaves and six graduated length leaves, including the master leaf. Each leaf is 7.2 mm thick and 65 mm wide. The centre-to-centre distance between the two eyes is 1.3m. The leaves are pre-stressed in such a way that when the load is maximum, stress induced in all leaves are equal to 380 N/mm sq. Determine the maximum force that the spring can withstand
1796Post New Mechanical Engineering Questions
Identify or enumerate the parts of stern tube
Explain why will an ice cube placed in a cup of hot rotating water spin automatically faster than the water itself?
why centrifugal pump used in I.D.fan and axial pump in F.D. fan
what is over ball dimmention? why it is required? what is used in machining?
Under what circumstances would there be an increase in pressure in a diver¬gent nozzle ?
How does a modern submarine move?
DIFFRENCE BETWEEN ISO AND TS
What type of pump is main L.O. pump?
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What are the different types of brakes?
Draw L.O. system in diesel engine?
purpose of primary and secondary air? causes of smoke?
Why the ship cranes are not having counter weights irrespect of industrial & civil construction cranes are having counter weights.
Can an airplane fly without a tail?
what is the procedure getting road permit form online
