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ISRO Mechanical Exam 2017: Weekly Toppers Quiz 4
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Question 1
The matrix 
is its own adjoint. The value of x will be
is its own adjoint. The value of x will be Question 2
The equation of the tangent to the curve y(x-2)(x-3)-x+7=0, at the point where it cuts the x-axis is
Question 3
Chance that a leap year selected at random will contain 53 Sundays is
Question 4
Hardness of martensite is about
Question 5
The tension in the cable supporting a lift moving upwards is twice the tension when the lift moves downwards. What is the acceleration of the lift?
Question 6
If the discharge of a centrifugal pump is throttled then its suction lift
Question 7
The transition Reynolds number for flow over a flat is 5 X 
. What is the distance from the leading edge at which transition will occur for flow of water with a uniform velocity of 1m/s? (For water, the kinematic viscosity, v = 0.858 X 
)
. What is the distance from the leading edge at which transition will occur for flow of water with a uniform velocity of 1m/s? (For water, the kinematic viscosity, v = 0.858 X ) Question 8
Which of the following screw thread is adapted for power transmission in one direction
Question 9
The force required to punch a 25 mm hole in mild steel plate 10 mm thick, when ultimate shear stress of the plate is 500 N/mm2 will be nearly __________.
Question 10
The mass moment of inertia of a cube with edges of length b, about an axis passing through an edge
Question 11
Speed of particle executing simple harmonic motion with amplitude a is half of the maximum speed. At that instant, displacement of the particle is
Question 12
A sample of gas (
) is taken through an adiabatic process in which the process in which the volume is compressed from 1600 
to 400
. If initial pressure is 150 kPa, then how much will be the final pressure in the process?
) is taken through an adiabatic process in which the process in which the volume is compressed from 1600 to 400. If initial pressure is 150 kPa, then how much will be the final pressure in the process? Question 13
In CAM, “Part programming“ refers to
Question 14
At the eye tip of a centrifugal impeller, blade velocity is 200 m/s while the uniform axial velocity at the inlet is 150 m/s. If the sonic velocity is 300 m/s, then the inlet Mach number of flow will be
Question 15
The critical point and triple point data for water are, 
= 374 °C, 
= 22.1 
, 
= 0.01 °C, 
= 0.6 k
. Indicates the change that will occur in following cases,
(i) Icc at 0.5 k
is heated isobarically
(ii) Water vapour at 400 °C is compressed isothermally
= 374 °C, = 22.1 , = 0.01 °C, = 0.6 k. Indicates the change that will occur in following cases, (i) Icc at 0.5 k
is heated isobarically(ii) Water vapour at 400 °C is compressed isothermally
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