Mechanical Engineering Interview Questions
Questions Answers Views Company eMail

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

640

What are the protections in a Diesel generator Engine?

Wartsila,

933

Why do you want do MS in Mechanical Engineering in US

757




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

2 4869

What is an Economizer?

RRB, Siemens, ABC Inc,

4 5896

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 16710

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

Tata Motors, Maruti Suzuki,

793

Why are open the ejector air vents.

662




What is the felding arrangment of the boiler

979

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

2 3349

explain the phenomena of autoignition in petrol engines

6 6362

what is bearing stress?

4 5315

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 2505

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

861

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

725


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Un-Answered Questions { Mechanical Engineering }

what is 2062 stands for in is2062 material?

2167


What's the difference between absolute vibration & relevant vibration regarding Boiler Feedwater Pump ?

680


please send all previous solved question papers on HLL......

1604


what is procedure of measuring operating length of mechanical seal.(in case of centrifugel pump)

1042


HOW CAN WE MEASURE THE L SHAPE SURFACE OF THE MOMENT OF INERTIA AND SECTION MODULUS

594






Can I use IS 2062 GR B Material for low temperature application upto -20 C ?

4265


How does optical pyrometer work?

833


how calculate the bearing number from inner and outer dia of bearing

177


sir, i am completed in diplamo. can i join in iit, anna univercity as lateral entry. pls reply me sir.

634


What is the difference between Runout and Total Runoutvv

541


What are the items to inspect after cylinder liner is pulled out

839


Sir, I'm P.Ravi Kumar want to previous mechanical Question Papers for rrb exam

657


What is the purpose of starting air?

615


how to solved the crictical problems in d. g. set

717


What is difference between HP and Torque

477