Which element promotes graphitization in steel ________?
Mohr’s circle construction is valid for both stress as well as the area moment of inertia because
A shaft rotating at uniform angular velocity. The shaft will be designed for
The optimistic, most likely and pessimistic time estimates of an activity are given as 8 days, 24 days and 44 days respectively. The standard deviation of the activity is
An elevator is required to lift a body of mass 65 kg.The acceleration (in m/s2) of the elevator which could cause a force of 800 N on the floor is ___
Which of the following method is used for manufacturing shafts?
According to Kennedy’s theorem the instantaneous centres of three bodies having relative motion lie on a
In centrifugal casting, the cores are generally made up of
In case of dynamic analysis of single slider crank chain, the correct expression for force acting along the connecting rod is given by_____.
where F is the piston effort and β is the angle made by the connecting rod with the line of sliding of the slider.
Which of the following assumptions are made for the analysis of stress induced in a thin cylindrical shell?
If the inner and outer surfaces of a hollow cylinder (having radii r1 and r2 and length L) are at temperatures t1 and t2 then rate of radial heat flow will
Which one of the following is a major loss?
The efficiency of the centrifugal pump is minimum when its blades are
In a throttling device, what do we get as SFEE when changes in PE and KE are taken zero?
The formation of frost on cooling coils in a refrigerator
In the subsonic flow through a convergent nozzle , the velocity _________.
In reaction turbine the fixed blade
Only rocket engines can be propelled to space because ________.
Perpetual motion machine of second kind violates the __________.
The diameter of droplet is 0.05mm. What is the intensity of the pressure (N/sq.cm) developed in the droplet by surface tension of 0.00005 N/mm?