A low pressure of the order of 10-10 torr is to be measured in a chamber. Which of the following device can be used for this?
A.Manometer
B.Bourdon vacuum gauge
C.Pirani gauge
D.Ionisation chamber
E.McLeod gauge
Category: Engineeeing Mcqs
The machining allowance provided on pattern depends on
A.The casting orientation
B.Size and shape of casting
C.Degree of accuracy required
D.All of the above
E.None of above
The technique of converting metallic powders into articles of definite form is known as
A.High pressure pressing
B.Carbiding
C.Powder metallurgy
D.Plasticizing
E.None of the above
The speed of sound will be maximum through
A.Water
B.Alcohol
C.Concrete
D.Aluminium
The fact that the product of pressure and volume of a fixed amount of gas is of approximately constant value is known as
A.Charle’s law
B.Gay Lussac’s law
C.Dalton’s law
D.Lewis law
E.None of these
In electric traction, the torque exerted is
A.continuous, pulsating
B.pulsating, continuous
C.pulsating, pulsating
D.continuous, continuous
A barN is
A.A unit of area
B.A unit of length
C.A unit of time
D.A unit of mass
E.None of the above
Power required for a train weighing 200 Mg to move at a uniform speed of 60 Kmph up an incline of 1 in 200 is (Resistance due to friction is negligible)
A.9810 KW
B.1000 KW
C.16.67 KW
D.163.5 KW
A diffuser
A.converts kinetic energy into thermal energy
B.converts potential energy into kinetic energy
C.converts pressure energy into kinetic energy
D.converts thermal energy into kinetic energy
What is the atomic or ionic characteristic that determines the elements of which the atom or iron is representative?
A.The number of protons
B.The number of neutrons
C.The nuber of electrons
D.The mass
