Mechanical Engineering Interview Questions
Questions Answers Views Company eMail

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

677

What are the protections in a Diesel generator Engine?

Wartsila,

964

Why do you want do MS in Mechanical Engineering in US

801




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

2 4964

What is an Economizer?

RRB, Siemens, ABC Inc,

4 6039

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 17037

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

Tata Motors, Maruti Suzuki,

835

Why are open the ejector air vents.

709




What is the felding arrangment of the boiler

1018

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

2 3408

explain the phenomena of autoignition in petrol engines

6 6532

what is bearing stress?

4 5420

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 2576

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

899

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

761


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Un-Answered Questions { Mechanical Engineering }

what's the diffrent between k engine series and qsk engine series and specialey fuel system

1088


What are the different type of mechanism to engage primary moving engine and transmission [ In other word how many different type of clutches are there

165


what is the significance of line of action in gear?

751


What happen when the expansion valve is excessively open?

650


Steam turbine (function an parts)

1678






Respected sir please send placement paper of bpcl

1402


What is the mathed of maintain oxizen level in a air tite A/c room.

821


Hi i am having 5 yrs of exp in Proe wildfire,Anybody have the jobs related to Aerospace

1228


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

821


Is it ABS AH 36 material equivalent to IS 2062 Gr B material.

15996


how to calculate cg of transformer

736


What are the causes of boiler backfire and steps in how to prevent it from happening?

714


How much is the specific fuel consumption of an average diesel engine?

629


Give the safety precaution when working in a high place.

780


what is the thickness tolerances up to 32 mm

783