BEML Question-Paper

                                 BEML Question Paper - Mechanical Engineering

1) The power comsumed by a electrical device is 1000W at 250V, What is the resistance in the device?
ans. Power= Voltage*current,
Current=Power/Voltage,
Current,I=1000/250=4
amps. V=IR,
Therefore R=250/4=62.5 ohms.

2) A mass of 100kg is falling from a height of 1 m and penetrates the sand into for 1 m. What is the resistance force given by sand?

3) Ratio of specific heats of air ? (1.41)

4) What will happen if one cylinder recieves amount of fuel spray from injectors than other injectors?

5) Two cars travell in same direction at 40 km/hr at a regular distance. A car comes in a opposite direction in 60km/hr. It meets each car in a gap of 8 seconds. What is the distance between them?

6) A simple problem involing in hoops stress. For sphere: M= [3/2]*p*V* [density of pressure vessel material/Maximum working stress it can tolerate] For Thin walled pressure walls: Hoops stress or stress in the radial direction =p*r/2t?

7) A body weighs 3 kg in air. If it is submerged in a liquid, it weighs 2.5 kg. What is the specific gravity of the liquid ?

8) What will happen to the resistance, when the diameter of the conductor is doubled?

9) Compostion of stainless steel.?
ans. iron+chromium+nickel+carbon.

10) CI is manifactured in which process?
ans. cupola process

11)What percentage of carbon is preset in pig iron?
ans. 4.5 to 6%.

12) Steel balls are produced by....

13)What will happen if the speed of the centrifugal pump doubles?

14) What is the effect or reheater in the gas turbine?

15) Composition of bronze?
ans. Copper+zinc.