توكلنا على الله:-
modes of heat transfer?
what are the reasons of engine overheating?
difference between 2 and 4 stroke engines?
types of mechanical seals ?
what are the boilers types ?
draw rankine cycle?
what are types of gears?
what are the types of bearing?
what are the classes of fire?
what are the extinguishing agent for each class?
what is the function of gokey pump?
draw the centrifugal pump characterstic curve?
what are the types of pump impellers?
what is the centrifugal pump oerating principle?