Answer:
a)
b) 
c) 
Explanation:
From the question we are told that:
Interior temperature 
outside temperature is 
Rate 
a)
Generally electric resistance heating is the heat transfer from interior building
Therefore
b)
COP =3
Generally the equation for coefficient of performance is mathematically given by
Therefore
c)
Generally the equation for coefficient of performance is mathematically given by
Therefore
Answer:
A safe enveroment.
Explanation:
Sirens usally mean fire or someone died.
Answer:
The correct answer is True.
Explanation:
The feedback control system implies that to make a feedback, there must first be an error, otherwise there will be nothing to correct.
This system works so that there is an output that is controlled through a signal.
This signal will be feedback and it will signal an error which will be detected by a controller that will allow entry into the system.
In basic words, this system processes signals, samples them in the form of an output, and re-enters them feedback to detect the error signal.
