In case of four cylinder opposed cylinder engines, the firing order is
A.1-4-3-2
B.1-2-4-2
C.1-2-3-4
D.1-2-4-3
E.1-3-2-4
Category: Mechanical Engineering Mcqs
The property of materials by which they can be drawn into wires is known as
A.Ductility
B.Elasticity
C.Plasticity
D.Malleability
E.Creep
The rate of heat flow from a 50 mm thick wall of material having thermal conductivity of 40 W/m?C for a temperature difference of 10?C will be
A.80 W/m2 – hr
B.800 W/m2 – hr
C.8000 W/m2 – hr
D.200 W/m2 – hr
E.2000 W/m2 – hr
Working pressure of a boiler does not depend upon
A.Tensile strength of shell
B.Thickness of shell
C.Factor of safety
D.Efficiency of joint
E.Type of fuel being fired
In the jet propulsion, efficiency of the propulstion depends upon
A.The speed of the vehicle
B.Height at which the vehicle is travelling
C.Density of the medium in which the vehicle is travelling
D.All of the above
Which of the following is/are renewable sources of energy?
A.Fall or flow of water
B.Sun
C.Wood
D.All of the above
Electric motor used for skip hoists may be
A.dc motor
B.Slip ring type induction motor
C.Ward Leonard system
D.Any of the above
In design of a shaft, pulley and key for a system
A.Shaft is the weakest member
B.Pulley is the weakest member
C.Key is the weakest member
D.All are designed equally strong
E.None of the above
Which of the following is not an advantage resulting from a company’s training its employees?
A.Increased productivity
B.Less employee obsolescence
C.Improved morale
D.Increased manufacturing flexibility
Choking is
A.Variation of mass flow rate in proportion to pressure ratio
B.variation of mass flow rate in inverse proportion to pressure ratio
C.fixed mass flow rate regardless of pressure ratio
D.none of the above
