1. Critical stress at which material will start to flow
(a)yield
(b)ultimate tensile stress
(c) proof stress
(d) none o the above
2. maximum degree of freedom in space
Ans. 6
3. bearing which will take axial and radial loads.
(a) thrust bearing
(b) deep groove
(c) taper roller
(d) ---
4. volume of water per cubic metre of air.
(a)specific volume
(b) specific gravity
(c) vapour pressure
(d) none of above
5. fluid is flowing through a frustum of cone. What is the nature of graph of velocity
Vs. c/s area. {flow = velocity X c/s area}
(a) parabola
(b) hyperbola
(c) y=mx+c
(d) x=x.
6. Fluid in a pipe having no change in profile with change in length of pipe .explain type of flow.
a)Laminar
b)Turbulent
c)fully developed profile <ans>
d)steady flow
7. Which are correct
I) Navier Stokes Eq. is . of momentum conservation eq.
II)bernoulis eq. is for viscous flow
III) REYNOLD no. >3000 always for turbulent flow.
a)I and II correct
b)I and II not correct
c)II and III correct
d)II and III not correct
8. Which can't be removed during alloying from Fe alloys
a) co
b) N
c) Si
d) As
9. There are two ropes burning non uniformly (rate) and clock half an hour each. which can't be
clocked ?
a) 1 Hr.
b) 45 min
c) 15 min
d) none
10. Lim n->0 (1+ 1/n)^n =
a) 1
b) 0
c) e
d) infinity
11.time dependent increase in length at steady temp. is called
a) superplasticity
b) creep
c) fatigue
d) none
12. Vicosity change with increasing temp.
a) decreases
b) increases
c) same
d) first decreases and then increases.
13. Direction of friction in bicycle tyres
a) along motion
b) opp. motion
c) Front opp. motion and vice versa
d) rear opp. motion and vice versa
14. Sp. gravity of a fluid
a) density of fluid at 0`c / density of water at o`c.
b) density of fluid at 0`c / density of water at T`c.
c) density of fluid at T`c / density of water at o`c.
d) density of fluid at T`c / density of water at T`c.
15. lateral strain / longitudinal strain
a) Poission's Ratio
b) Bulk Modulus
c) Modulus Of Elasticity
d) None
16. 10 coins & 1 defected coin and 2 weighs Find min weighs req. to detect faulty coin
a) 2
b) 3
c) 4
d) 5
17. 9 members in meeting scheluled at 10:00 A.M. , all reaches at 9:48 A.M. .
one member req. 2 min to intro with other find meeting delay with scheduled time of 10:00 A.M.
a) 1 Hr.
b) 6 min
c)At scheduled time
18. A completes job in 10 hr. and B completes in 15hr. Find When both together works
a) 6 hr.
b) 8 hr
c) 10 hr
d) none
19. A ball dropped from H height and moves 80% of height each time.Total dist. covered
a) 4H
b) 5H
c) 7H
d) 9H
20. A cantilever beam loaded at free end find reinforcement place
a) AT neutral axis
b) above neutral axis
c) below neutral axis
d) above and below neutral axis
21. punching a sheet of D dia and T thickness and S ultimate tensile stress
a) 3.14 DTS
b) 3.14TS X D^2
c) 6.28 DTS
d) 6.28 TS x D^2
22. Microstructure after quenching
a) Mertensite
b) pearlite
