Which of the following is generally not used as a thermocouple material?
A.Platinum – Rhodium
B.Chromel – Alumel
C.Gold – Silver
D.Chromel – Copper
E.None of the above
Category: Engineeeing Mcqs
In a slider-crank mechanism
A.there are 4 turning pairs
B.one is a turning pair and 3 sliding pairs
C.two turning pairs and two sliding pairs
D.None of the above
In material handling plants, automatic scales are used for
A.weighing the material
B.sizing the material
C.batching the material
D.dressing the material
Actual maximum flame temperatures for the pure combustible gases burnt in unpreheated air range from
A.1000 to 2000?F
B.2000 to 2500?F
C.2700 to 3000?F
D.3400 to 3800?F
Kinematic similarity between model and prototype means
A.The similarity of forces
B.The similarity of shape
C.The similarity of motion
D.The similarity of discharge
The producer gas is mainly used in
A.petroleum refinery
B.fertilizer industry
C.steel industry
D.pharmaceutical industry
The joints of a phosphor-bronze Bourdon tubes are
A.Soldered
B.Brazed
C.Screwed
D.Welded
E.Jointed by adhesives
Fouling factor
A.Is dimensionless
B.Measures the heat transfer efficiency
C.Is virtually a factor of safety in heat exchanger design
D.Is used when a liquid exchanges heat with a gas
E.Is used only in case of Newtonian fluids
An electric motor drives a windless which hauls up a crate A of weight W = 500 kg up an inclined plane through a height of 10 m in 2 minutes. The torque acting on the windless is 25 kgm and the drum of the windless makes 30 rpm. The efficiency of the inclined plane would be
A.26.50%
B.41%
C.53.05%
D.61%
E.66%
The highest value of thermal conductivity is expected for
A.Solid ice
B.Melting ice
C.Water
D.Boiling water
E.Steam
