Answer:
the heat transfer from the pipe will decrease when the insulation is taken off for r₂< 
where;
r₂ = outer radius
= critical radius
Explanation:
Note that the critical radius of insulation depends on the thermal conductivity of the insulation k and the external convection heat transfer coefficient h .
The rate of heat transfer from the cylinder increases with the addition of insulation for outer radius less than critical radius (r₂< ) 0, and reaches a maximum when r₂ = , and starts to decrease for r₂< . Thus, insulating the pipe may actually increase the rate of heat transfer from the pipe instead of decreasing it when r₂< .
Answer:
Football stadium on rocky soil
Skyscraper on bedrock
Apartment building on sandy soil
Explanation:
Answer:
Explanation:
From the question we are told that:
Voltage 
Power 
Initial Power factor 
Final Power factor 
Generally the equation for Reactive Power is mathematically given by
Q=P(tan \theta_2-tan \theta_1)
Since
And
Therefore
Therefore
The size of the capacitor in vars that is necessary to raise the power factor to 0.9 lagging is
Answer:
Option (C)
Explanation:
A tool is usually defined as an equipment or a device that is hold by the hands and is used to carry out a particular function. For example, a hammer is a tool that is used to hit on a hard surface.
A tool can be considered as a technology under a certain condition, such as the applications of this objects are helpful in solving a practical problem, with ease and comfortability.
Thus, the correct answer is option (C).
