# In an interchangeable assembly, shafts of size mm mate with holes of size . The maximum interference (in micros) in the assembly is

1.  40

2.  30

3.  20

4.  10

4

20

Explanation :
No Explanation available for this question

# During normalizing process of steel, the specimen is heated

1.  Between the upper and lower critical temperature and cooled in still air

2.  Above the upper critical temperature and cooled in furnace

3.  Above the upper critical temperature and cooled in still air

4.  Between the upper and lower critical temperature and cooled in furnace

4

Above the upper critical temperature and cooled in still air

Explanation :
No Explanation available for this question

# For an opaque surface, the absorptivity (α), transitivity (t) and reflectivity (ρ) are related by the equation

1.  α + ρ=t

2.  p+α +t=0

3.  α + p=1

4.  α +p=0

4

α + p=1

Explanation :
No Explanation available for this question

# steam enters an adiabatic turbine operating at steady state with an enthalpy of 3251.0 kj/kg and leaves as a saturated mixture at 15 kpa with quality 0.9. the enthalpies of the saturated liquid and vapour at 15kpa are hf=225.94 kj/kg and hg=2598.3 kj/kg respectively. The mass flow rate of stream is 10 kg/s. kinetic and potential energy changes are negligible. The power output of  the turbine in MW is

1.  6.5

2.  8.9

3.  9.1

4.  27.0

4

8.9

Explanation :
No Explanation available for this question

# The following are the data for two crossed helical gears used for speed reduction: Gear I: pitch circle diameter in the palne of rotation 80 mm and helix angle 300 Gear II : pitch circle diameter in the palne of rotation 120mm and helix angle 22.50 If the input speed is 1440rpm, the output speed in rpm is:

1.  1200

2.  900

3.  875

4.  720

4

900

Explanation :
No Explanation available for this question

# A solid disc of radius r rolls without slipping on the horizontal floor with angular velocity w and angular acceleration α. The magnitude of acceleration of the point of contact on the disc is:

1.  Zero

2.  Rα

3.

4.  Rw2

4

Zero

Explanation :
No Explanation available for this question

# A thin walled spherical shell is subjected to an internal pressure . if the radius of the shell is increased by  1% and the thickness is reduced by 1%, with the internal pressure remaining the same, the percentage change in the circumferential stress is

1.  0

2.  1

3.  1.08

4.  2.02

4

2.02

Explanation :
No Explanation available for this question

# The area enclosed  b/w the straight line y=x and the parabola y=x2 in the x-y plane is

1.  1/6

2.  1/4

3.  1/3

4.  1/2

4

1/3

Explanation :
No Explanation available for this question

# Consider the function f(x)=|x| in the interval -1≤x≤1. At the point x=0, f(x) is

1.  Continuous and differentiable

2.  Non-continuous and differentiable

3.  Continuous and non-differntiable

4.  Neither continuous nor differentiable

4

Continuous and non-differntiable

Explanation :
No Explanation available for this question

1.  1/4

2.  1/2

3.  1

4.  2

4