In extrusion of metals, which of the following statement is true ? Hollow ram is used for indirect extrusion Redundant work is a function of the die angle Relative motion between the billet surface and the container wall is always present Speed of the extruded material is same as that of ram speed TRUE ANSWER : ? YOUR ANSWER : ?
Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C. 1493 959 1147 723 TRUE ANSWER : ? YOUR ANSWER : ?
There are one octahedral void and __________ tetrahedral void in the closest packing of atoms. None of these Three One Two TRUE ANSWER : ? YOUR ANSWER : ?
Specific __________ is a dimensionless quantity. None of these Weight Heat Humidity TRUE ANSWER : ? YOUR ANSWER : ?
Air standard Otto cycle is more efficient than the diesel cycle for the same Heat addition & pressure Cylinder dimension & rpm Heat addition & compression ratio Compression ratio & pressure TRUE ANSWER : ? YOUR ANSWER : ?
The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system Employs minimum quantity of refrigerant Is as light as possible Has very high C.O.P Consumer minimum horse power TRUE ANSWER : ? YOUR ANSWER : ?
Milligram of KOH required to saponify 1 gm of oil is called its __________ number. Precipitation Saponification Emulsion Acid TRUE ANSWER : ? YOUR ANSWER : ?
Oxyacetylene reducing flame is used while carrying out welding on Grey cast iron Mild steel Alloy steel High carbon steel TRUE ANSWER : ? YOUR ANSWER : ?
Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the Diameter of the pipe Density of the fluid Length of the pipe Velocity of the fluid TRUE ANSWER : ? YOUR ANSWER : ?
The most detrimental impurity in high pressure boiler feed water is Dissolved salt Turbidity Suspended salt Silica TRUE ANSWER : ? YOUR ANSWER : ?