Phenolic thermo-setting plastics are finding application in pattern making because
A.they do not absorb moisture
B.they are strong
C.they are resistant to wear
D.they have all above qualities
Category: Engineeeing Mcqs
An atom containing an odd number of electrons is said to be
A.Diamagnetic
B.Hypermagnetic
C.Paramgnetic
D.Ferromagnetic
E.Dielectric
Acids are substances that yield H+ in acqueous solutions while bases yield OH?ions. In a neutral solution
A.there are no H+
B.there are no OH?
C.H+ and OH- are present in very small but equal concentration
D.[H+] + [OH-] = 1
Most of the heat generated in I.C. engines is transferred to surrounding medium by
A.Conduction only
B.Convection only
C.Conduction and convection
D.Radiation only
E.None of the above
The critical pressure water is
A.1 atm
B.100 kg/cm2
C.150 kg/cm2
D.Less than 200 kg/cm2
E.More than 200 kg/cm2
The percentage of krypton in atmospheric air is around
A.0.01 ppm
B.0.1 ppm
C.1 ppm
D.10 ppm
A system in which there may exchange energy but not mass is known as
A.open system
B.closed system
C.isolated system
D.insulated system
Depreciation charges for a machine are thirty paise per working hour. The machine has a scrap value of Rs. 2000 and a working hour average life of 24000 hours. The purchase price of the machine would be
A.Rs. 1800
B.Rs. 7200
C.Rs. 9200
D.Rs. 14275
E.Rs. 17750
Sun radiates energy to the earth
A.in the form of electromagnetic radiation
B.at a relatively constant rate of 3.83 x 1026 W
C.24 hours per day 365 day of the year
D.all of the above
A choke is applied in a car
A.For increasing speed
B.For fuel economy
C.For starting in cold weather
D.For starting in hot weather
E.For reduction of speed
