Answer / deepika

by installing auxillary equipments like economiser ,air
prehaeter we can increase the effeciancy of boiler.

Answer / avantika

There are many ways to ensure that boiler and steam
distribution systema operate at optimum efficiency. steam
is used at a large scale in power plants it is important to
optimise the efficiency of each parts of such systems by
selection, sizing operation and maintenance.

Answer / abhilav vishwakarma

Boiler consists of no. of operating units with it such as
economiser, drum, super heater , control valves , dust
removing units , IBD AND CBD valves. thus if all the
subcompponents work properly and maintained regularly
Boiler efficiency can be increased.

Answer / farheen

Accessories like - super heaters,economisers etc, can
increase the efficiency of a boiler.

When a 30KW/3 ph pump runs one hour continously, what will be the heat dissipated? how can i find this, any general equation?

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What is a machine shop?

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1.5 ton how many amps

2 Answers   SAS, Suvidha Engineers,

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What is mean by reconditioning & retrofitting of machine tool please brief.

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Specific strength of materials is very high when they are in fibre size but lower when they are in bar form why ?

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how the ratchet in an micrometer works?

2 Answers  

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Did you have a favorite project that you had to do while in school?

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What is the acronym FAT

1 Answers  

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Define stefan boltzman contant.

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What s gland sealing steam?

3 Answers   ABC Inc, RRB, Siemens,

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Distinguish between the shear center and elastic center.

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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

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