In case of obstruction meters used for flow measurement, pressure recovery is maximum in the case of
A.venturi
B.flow nozzle
C.orifice
D.None of the above
Category: Engineeeing Mcqs
Generally for the melting of cast iron, electric furnaces are not used because
A.cast iron is in the form of broken pieces
B.cast iron requires higher temperature for heating
C.the rate of heating required for melting cast iron connot be provided by electric furnaces
D.It is expensive to use electricity for melting of cast iron
In case of spur gears the flank of the tooth is
A.The part of the tooth surface lying below the pitch surface
B.The curve forming face and flank
C.The width of the gear tooth measured axially along the pitch surface
D.The surface of the top of the tooth
E.Radius that connects in the root circle to the profile of the tooth
The correct order of cooling media for decreasing cooling rate is
A.Air, water, oil, fused salt
B.Water, air, fused salt, oil
C.Oil, fused salt, air, water
D.Water, oil, fused alst, air
Ignition system used in scooters is
A.magneto system
B.battery system
C.Combination of magneto and battery system
D.neither magneto nor battery system
Which of the following is not a semi-conductor?
A.Silicon
B.Tetraethyl lead
C.Gallium Arsenide
D.Germanium
E.All of the above
The range of nuclear forces is
A.10-8 cm
B.10-13 cm
C.10-16 cm
D.100 angstron
Machinability of a metal depends on
A.Tensile strength
B.Hardness
C.Toughness
D.(A) and (B) above
E.(B) and (C) above
The principal constituent of Pyrex glass is
A.Zn
B.B
C.Pb
D.Ce
The hydraulic gradient line
A.Is always below the total energy line
B.Is always parallel to the bottom
C.Is same as central line of section
D.Is always above the total energy line
E.Is always below the total energy line
