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Mechanical Engineering Interview Questions
Questions Answers Views Company eMail

can any body sand me previous exampapers of jr. engineer (mechanical)

1276

What are the protections in a Diesel generator Engine?

Wartsila,

1518

Why do you want do MS in Mechanical Engineering in US

1507

Is heat treatment required for hardox 400+Mild steel welding ?

2 6074

What is an Economizer?

ABC Inc, RRB, Siemens,

4 8075

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 22677

Hi i am balaji, what is the difference grade avail in welding electordes ?

Maruti Suzuki, Tata Motors,

1440

Why are open the ejector air vents.

1329

What is the felding arrangment of the boiler

1590

What is the size of a Squre nut of a M12 Bolt

2 4423

explain the phenomena of autoignition in petrol engines

6 9676

what is bearing stress?

4 7058

1. 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 3848

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

1628

please send previous year que. paper of je mech rrb.

1331


Post New Mechanical Engineering Questions

Un-Answered Questions { Mechanical Engineering }

What is the difference between austenite stabilisers and ferrite stabilisers ?

472


At 50 Centigrade (Diesel oil) what is its cast?

1367


Explain working of Kaplan turbine?

505


What is a vee used for on the vee block?

478


What do you know about DG ,A,B,C, D, Check and safety of generator.?

859






What is the difference between alpha iron, delta iron and gamma iron ?

517


ball pen is writtingg on paper

1494


in aviation, How does control valves work?

1266


What is pitting ? How it is caused ?

499


dear sir i m anshul kumar from dehradun i want to last five year railway chandigarh and allahabd entrance exam papers pls send it on my id my id is anshuldhiman83@gmail.com or anshuldhiman@rediffmail.com i shall be very greatful to u thank u

1689


during the design of a friction clutch what are the considerations that should be made?

499


Why must we pay attention when we drain steam in steam turbine. What factors are observed?

1351


what is the actual difference between casting and moulding? explain pressure die casting process?

17704


From where compressor recive power in automobile?

2569


What is cri pumps & mechanical sael

3425