BSNL JTO Mechanical

Will you please tell that can a Mechanical Engineering student apply for BSNL JTO job exam ? please give qualification detail for exam ?

Yes, a Mechanical Engineering student apply for BSNL JTO job exam.


Basic qualification and other requirement for BSNL JTO job exam:

Candidate must have B.E /B.Tech degree in (IT/CSE/ECS/Mechanical) with 50% of minimum marks.

Age:
21 to 35 years.

Sample paper for the exam :


1. An Aeroplane travels at 400 km/hr at sea level where the temperature is 15oC. The velocity of the Aeroplane at the same Mach number at an altitude where a temperature of -25Cis prevailing, would be
a) 126.78 km/hr
b) 130.6 km/hr
c) 371.2 km/hr
d) 400.10 km/hr (Ans)

2. The plot for the pressure ratio along the length of the convergent-divergent nozzle is shown in the given figure. The sequence of the flow conditions labelled 1,2,3, and 4 in the figure is respectively

a) supersonic, sonic, subsonic and supersonic
b) sonic, supersonic, subsonic and supersonic
c) subsonic, supersonic, sonic and subsonic
d) subsonic, sonic, supersonic and subsonic (Ans)

3. If the full -scale turbine is required to work under a head of 30 m and to run at 428 r.p.m., then a quarter-scale turbine model tested under a head of 10 m must run at
a) 143 r.p.m.
b) 341 r.p.m.
c) 428 r.p.m.
d) 988 r.p.m. (Ans)

4. The dimensionless group formed by wavelength λ, density of fluid ρ, acceleration due to gravity g and surface tension σ, is
a) σ (Ans)
λ2gρ
b) σ
λg2ρ
c) σg
λ2ρ
d) ρ
λ2gρ


5. Which one of the following sets of standard flows is uperimposed to represent the flow around a rotating cylinder ?
a) Doublet, vortex and uniform flow (Ans)
b) Source, vortex and uniform flow
c) Sink, vortex and uniform flow
d) Vortex and uniform flow


6. A float of cubical shape has sides of 10 cm. The float valve just touches the valve seat to have a flow area of 0.5 cm2 as shown in the given figure. If the pressure of water in the pipeline is 1 bar, the rise of water level h in the tank to just stop the water flow will be
a) 7.5 cm
b) 5.0 cm (Ans)
c) 2.5 cm
d) 0.5 cm

7. A U-tube manometer is connected to a pipeline conveying water as shown in the given figure. The pressure head of water in the pipeline is

a) 7.12 m
b) 6.56 m
c) 6.0 m (Ans)
d) 5.12

8. The eye of a tornado has a radium of 40 m. If the maximum wind velocity is 50 m/s, the velocity at a distance of 80 m radius is
a) 100 m/s
b) 2500 m/s
c) 31.25 m/s
d) 25 m/s (Ans)

9. If a vessel containing liquid moves downward with constant acceleration δ, then
a) the pressure throughout the liquid mass is atmosphere
b) the pressure in the liquid mass is greater than the hydrostatic pressure
c) there will be vacuum in the liquid
d) the pressure throughout the liquid mass is greater than atmosphere (Ans)

10. Improve streamlining produces 25% reduction in the drag coefficient of a torpedo. When it is travelling fully submerged and assuming the driving power to remain the same, the increase in speed will be
a) 10 % (Ans)
b) 20 %
c) 25 %
d) 30 %

11. If a bullet is fired in standard air at 15oC at the Mach angle of 30oC, the velocity of the bullets would be
a) 513.5 m/s
b) 585.5 m/s
c) 645.5 m/s
d) 680.5 m/s (Ans)

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Answered By StudyChaCha Member