Related Questions

A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
A Remain horizontal
B Slant up towards direction of pull
C Slant down towards direction of pull
D None of the above
When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure
A Varies as the square of the radial distance
B Increases linearly as its radial distance
C Increases as the square of the radial distance
D Decreases as the square of the radial distance
Crushing of mineral particles is accomplished in a 'cage mill', when one or more alloy steel bars are revolved in opposite directions. It is a type of __________ mill.
A Impact
B Roll
C Vibratory
D None of these
The velocity ratio in case of an inclined plane inclined at angle 'θ' to the horizontal and weight being pulled up the inclined plane by vertical effort is
A sinθ
B cosθ
C tanθ
D cosecθ
A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?
A 2
B 4
C 6
D 5
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)
A P = W tanα
B P = W tan (α + φ)
C P = W (sinα + μcosα)
D P = W (cosα + μsinα)
Plane P take off at 2:00 am and flies at a constants speed of Xmph. Plane Q takes off at 3:30 am and flies the same forte as plane p but travels at a constant X, how many hours after 3:30 am will plane Q overtake plan P?
A 1.5x/y +0.5
B 2
C 4
D 5
Lead is poured into the joint between two pipes. These pipes may be made of
A Cast iron
B Vitrified clay
C Asbestos cement
D Concrete
An Auto-CAD term that refers to a pre-drawn object which is stored in a drawing file and can be inserted into any other drawing file as needed is a __________.
A Block
B Brick
C Balloon
D None of the above
In some circumstances an entire drawing can be inserted into a different drawing as a block. When this is used the base point will default to _________.
A 0, 0
B 10, 10
C 20, 20
D 30, 30

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