Choose the grammatically INCORRECT sentence:

**A. ** He is of Asian origin

**B. ** They belonged to Africa

**C. ** She is an European

**D. ** They migrated from India to Australia

**Answer : ****Option C**

**Explaination / Solution: **

No Explaination.

No Explaination.

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A tourist covers half of his journey by train at 60 km/h, half of the remainder by
bus at 30 km/h and the rest by cycle at 10 km/h. The average of the tourist in
km/h during his entire journey is

**A. ** 36

**B. ** 30

**C. ** 24

**D. ** 18

**Answer : ****Option C**

**Explaination / Solution: **

Let the total distance covered be ‘D’

Let the total distance covered be ‘D’

Now, average speed = D/Total time taken

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For a ductile material, toughness is a measure of

**A. ** Resistance to scratching

**B. ** Ability to absorb energy up to fracture

**C. ** Ability to absorb energy till elastic limit

**D. ** Resistance to indentation

**Answer : ****Option B**

**Explaination / Solution: **

Explanations:-

Since, toughness has ability to absorb energy up to fracture

Explanations:-

Since, toughness has ability to absorb energy up to fracture

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For steady, fully developed flow inside a straight pipe of diameter D, neglecting gravity effects, the pressure drop over a length L and the wall shear stress are related by

**A. **

**B. **

**C. **

**D. **

**Answer : ****Option A**

**Explaination / Solution: **

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Specific enthalpy and velocity of steam at inlet and exit of a steam turbine,
running under steady state, are as given below:**A. ** 901.2

**B. ** 911.2

**C. ** 17072.5

**D. ** 17082.5

**Answer : ****Option C**

**Explaination / Solution: **

Specific enthalpy (kJ/kg) Velocity(m/s)

Inlet steam condition 3250 180

Exit steam condition 2360 5

The rate of heat loss from the turbine per kg of steam flow rate is 5 kW.
Neglecting changes in potential energy of steam, the power developed in kW by
the steam turbine per kg of steam flow rate, is

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Two large diffuse gray parallel plates, separated by a small distance, have
surface temperatures of 400 K and 300 K. If the emissivities of the surfaces are
0.8 and the Stefan-Boltzmann constant is 5.67 × 10^{-4} W / m^{2} K^{4}, the net radiation
heat exchange rate in kW / m^{2} between the two plates is

**A. ** 0.66

**B. ** 0.79

**C. ** 0.99

**D. ** 3.96

**Answer : ****Option A**

**Explaination / Solution: **

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In a simple Brayton cycle, the pressure ration is 8 and temperatures at the
entrance of compressor and turbine are 300 K and 1400 K, respectively. Both
compressor and gas turbine have isentropic efficiencies equal to 0.8. For the
gas, assume a constant value of c_{p} (specific heat at constant pressure) equal to
1 kJ/kgK and ratio of specific heats as 1.4. Neglect changes in kinetic and
potential energies.

**A. ** 194.7

**B. ** 243.4

**C. ** 304.3

**D. ** 378.5

**Answer : ****Option C**

**Explaination / Solution: **

The power required by the compressor in kW/kg of gas flow rate is

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A steel bar 200 mm in diameter is turned at a feed of 0.25 mm/rev with a depth of cut of 4 mm. The rotational speed of the workpiece is 160 rpm. The material removal rate in mm^{3} / s is

**A. ** 160

**B. ** 167.6

**C. ** 1600

**D. ** 1675.5

**Answer : ****Option D**

**Explaination / Solution: **

f × d × v

f × d × v

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A compound gear train with gears P, Q, R and S has number of teeth 20, 40,
15 and 20, respectively. Gears Q and R are mounted on the same shaft as
shown in the figure below. The diameter of the gear Q is twice that of the gear
R. If the module of the gear R is 2 mm, the center distance in mm between
gears P and S is

**A. ** 40

**B. ** 80

**C. ** 120

**D. ** 160

**Answer : ****Option B**

**Explaination / Solution: **

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A single riveted lap joint of two similar plates as shown in the figure below has
the following geometrical and material details: **A. ** 7.50

**B. ** 15.00

**C. ** 22.50

**D. ** 30.00

**Answer : ****Option C**

**Explaination / Solution: **

No Explaination.

Width of the plate w=200 mm, thickness of the plate t=5 mm, number of rivets
n=3, diameter of the rivet d_{r} = 10mm, diameter of the rivet hole d_{h} = 11mm, allowable tensile stress of the plate σ_{p} = 200 MPa, allowable shear stress of the
rivet σ_{s} = 100 MPa and allowable bearing stress of the σ_{c} = 150 MPa

If the rivets are to be designed to avoid crushing failure, the maximum
permissible load P in kN is

No Explaination.

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