For annealing of aluminium it is heated to
A.325?C
B.425?C
C.525?C
D.625?C
Category: Mechanical Engineering Mcqs
If molar Cp = 4.97 then
A.Cv = 2.97
B.Cv = 1.97
C.Cv = 5.97
D.Cv = 0.97
E.Cv = 0.597
Which of the following motor can operate on lagging as well as leading power factor?
A.Universal motor
B.Squirrel cage induction motor
C.Synchronous motor
D.Reluctance motor
E.Capacitor run motor
Overall efficiency of a gas turbine is
A.equal to Rankine cycle efficiency
B.equal to Carnot cycle efficiency
C.less than Diesel cycle efficiency
D.more than Otto or Diesel cycle efficiency
A kinematic chain requires minimum of
A.2 links and 3 turning pairs
B.3 links and 3 turning pairs
C.3 links and 4 turning pairs
D.4 links and 4 turning pairs
E.4 links and 5 turning pairs
Pneumatic conveyors are generally used for conveying
A.package goods
B.mineral ores
C.heavy goods
D.granular material
In order to reverse the direction of rotation of a 3-phase induction motor
A.Motor should eb replaced
B.Supply voltage should be cut off in one phase
C.Power factor should be changed
D.All the three phases should be interchanged
E.Any two phases should be interchanged
A monopolistic firm’s average revenue is always
A.Rising
B.Falling
C.Constant
D.Dometimes rising sometimes falling
E.Depends on several variables
In which section of a vapour compression system, the refrigerant is generally in the form of a wet vapour?
A.Evaporator
B.Expansion valve
C.Compressor
D.Condenser inlet
E.Condenser outlet
