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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 56
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 Mohrs circle coincides with the origin then which is true
.the relation between Sx and Sy is asked
8. Lames theorem
.F1/sinA=F2/sinB=F3/sinC
9. Youngs modulus value for steel=200Gpa
10. Thermal conductivity of silver=400w/m0K
11. Fouling factor formula
F.F =1/Udirty-1/Uclean
12. Relation between notch sensitivity factor and theoretical stress concentration factor
13. Effectiveness of heat exchanger definition
14. Reynoldss number formula
15. Clinical thermometer is which order system
.0,1,2, or 3
16. Piezometric transducer is used to find which signalsstatic or
. 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 stiffnesss K1, K2
Kequivalent=K1*K2/K1+ K2
21. Magnification factor at resonance, MF=1/2zeta
22. Coroilis 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
