BHEL Previous Paper
1. Critical load acting axially on a long column
Ans: (pi)2*E*I/L2
2. Relation between moment of area and radius of gyration
Ans: I=AK2
3. Cup shaped components are produced using which operation
Ans: drawing
4. A sheet of Al alloy having 2mm thickness is welded using which process
Ans: TIG
5. Two gears having teeth 18 and 40 and center distance 56â¦what is the module?
6. In thick cylinders, which of the following is true[*S stands for sigma*] (a) St>Sr (b) St=Sr (c)St
7. In a plane stress condition, if the centre of Mohrâs circle coincides with the origin then which is true⦠â¦.the relation between Sx and Sy is asked
8. Lameâs theoremâ¦.F1/sinA=F2/sinB=F3/sinC
9. Youngâs modulus value for steel=200Gpa
10. Thermal conductivity of silver=400w/m0K
11. Fouling factor formulaâ¦â¦F.F =1/Udirty-1/Uclean
12. Relation between notch sensitivity factor and theoretical stress concentration factor
13. Effectiveness of heat exchanger definition
14. Reynoldsâs number formula
15. Clinical thermometer is which order system â¦.0,1,2, or 3
16. Piezometric transducer is used to find which signalsâstatic orâ¦. dynamic
17. Peclet number formula=Re*Pr
18. Radiation energy emitted, Eemitted=S*A*T4
19. Which of the following is not related to CI engine
(a) Fuel pump
(b) carburetor
(c)none
20. Two connected in series having stiffnessâs K1, K2
Kequivalent=K1*K2/K1+ K2
21. Magnification factor at resonance, MF=1/2zeta
22. Coroiliâs component value, =2vw
23. Hooks law holds good upto
(a)elastic point
(b)UYP
(c)LYP
(d)Failure
24. Meshing of two gears fail if
(a)materials are different
25. A beam whose one end is fixed and other is free is
(a)cantilever
(b)ss
(c)Udl
(d)none
26. Deflection at the free end of cantilever =PL3/3EI
27. Rota meter is used to find
(a)flow
(b)velocity
(c)pressure
(d)density
28. Formula for polar moment of inertia of a hollow shaft
29. Formula for logarithmic decrement
30. Metacentric height is the distance between Metacentre and --------
Ans: Centre of gravity