The chemical formula of diammonium phosphate is
A.(NH4)2HPO4
B.(NH4)2H2PO4
C.NH4H2PO4
D.(NH4)2PO4
Category: Engineeeing Mcqs
In grey cast iron, carbon is present in the form of
A.Cementite
B.Flakes
C.Powder
D.Spheroids
E.None of the above
1 Kilo-Pascal is the same as
A.1000 n/mm2
B.1000 N/cm
C.1000 N/cm2
D.1000 N/m2
E.
The Schmidt number (NSc) is the ratio of
A.the momentum diffusivity to the mass diffusivity
B.the mass diffusivity to the momentum diffusivity
C.the thermal diffusivity to the mass diffusivity
D.the momentum diffusivity to the thermal diffusivity
A 132 kV transmission line carrying power through a distance of 250 kilometers will be termed as
A.Very short transmission line
B.Short transmission line
C.Long transmission line
D.Trunk line
E.None of the above
The simplest type of controls for reservoir outlets is provided by
A.Slide gates
B.Height pressure gates
C.Radial gates
D.Jet flow gates
E.Cylindrical gates
Air conditioning means
A.Cooling
B.Heating
C.Dehumidifying
D.Removal of air impurities
E.All above
Aeration of water is done for all of the following purposes EXCEPT for:
A.removal of bad tastes
B.removal of carbon dioxide
C.increasing the quantity of oxygen in water
D.removal of temporary hardness
A surface damage which results when two surfaces in contact experience light periodic relative motion is
A.Fretting
B.Pitting
C.Corrosion
D.Surface wear
E.None of the above
Cork is a good insulator because
A.Its density is low
B.It is porous
C.It can be powdered
D.It can be cast into rolls
E.It is flexible
