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Answer Posted / manikandan
turbine is an prime mover to drive any pump, compressors,generators etc
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please send me previous question papers of rrb chennai applied for junior engineer in mechanical dept
2. 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
Compare the prandtl numbers of Air, water and Liquid metal. If prandtl number is more what do you understand?
in aviation, How does control valves work?
What are the different types of bearings?
increase in unit speed increases the discharge of impulse turbine how?
why is cast iron seasoning important before machining?
what is the advantages and dis advantages of critical speed of turbine.
Distinguish between creep and fatigue.
how to prepare welding procedure specification and pqr
As per api 650 code for new ss tank fabrication,in bottom plate bulge is acceptable? How many bulge acceptable for api 650?
What are the causes of damage to propellers?
In General please do read newspapers.And be thorough with 10th history and Geography.Biology also
CAN ANY ONE SEND ME THE RRB SECTION ENG. Q-PAPER .. MY MAIL ID :suresh25siva@yahoo.com, suresh.sivakumar@tcs.com
what is the difference between steel tube grade IS 1239&IS 1169
