OFB Chargeman Mechanical Question Paper

OFB Chargeman Mechanical Question Paper - 2014 with Answer Key

46) The ascending order or a data Hierarchy is

Answer is:

bit-bytes-fields-record-file-database

47) The density of water varies with temperature which helps the aquatic animals to live in cold water. At what temperature is the density of water maximum?

Answer is:

4 degree centigrade

48) Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Answer is:

Manganese

49) The atomic mass of oxygen is

Answer is:

16

50) A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as

Answer is:

Diesel cycle

Explanation:

The Diesel cycle is a combustion process of a reciprocating internal combustion engine. In it, fuel is ignited by heat generated during the compression of air in the combustion chamber, into which fuel is then injected.
A Diesel cycle consists of one constant pressure, one constant volume and two isentropic processes.