A jet engine turbine blade is normally manufactured by____________________?
(A) Forging
(B) Shell moulding
(C) Investment casting
(D) Pressure die casting
Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?
(A) Hot rolled mild
(B) Cold rolled mild
(C) Forged
(D) Machinable stainless
Wrought iron does not have__________________?
(A) Uniform strength in all directions
(B) Ability to hold protective coating
(C) High ductility & corrosion resistance
(D) Easily weldable characteristics
X-rays are__________________?
(A) Positively charged
(B) Negatively charged
(C) Neutral
(D) Of higher wavelength than visible light
In extrusion of metals, which of the following statement is true ?
(A) Speed of the extruded material is same as that of ram speed
(B) Redundant work is a function of the die angle
(C) Relative motion between the billet surface and the container wall is always present
(D) Hollow ram is used for indirect extrusion
A solar cell converts the sunlight directly into ______________ energy?
(A) Thermal
(B) Electrical
(C) Mechanical
(D) Chemical
The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the_________________?
(A) Pipe roughness & pipe diameter
(B) Fluid velocity
(C) Type of flowing fluid
(D) Both
Which of the following does not discharge the dust collected as a dry solid?
(A) Electrostatic precipitator
(B) Wet scrubber
(C) Bag filter
(D) Gravity settling chamber
Hydro-cyclone is a____________________?
(A) Crusher
(B) wet classifier
(C) Dry classifier
(D) Magnetic separator
Tin based white metals are used, where bearings are subjected to___________________?
(A) High pressure & load
(B) Low pressure & load
(C) High temperature
(D) Large surface wear