Answer:
W = 12.8 KW
Explanation:
given data:
mass flow rate = 0.2 kg/s
Engine recieve heat from ground water at 95 degree ( 368 K) and reject that heat to atmosphere at 20 degree (293K)
we know that maximum possible efficiency is given as



rate of heat transfer is given as



Maximuim power is given as

W = 0.2038 * 62.7
W = 12.8 KW
Answer:
Sense the current leakage
Trip the circuit
Cut off the electricity
Explanation:
The correct order is -
Sense the current leakage
Trip the circuit
Cut off the electricity
Reason -
First step has to be taken to sense the electric current leakage without it being detected, it cant be dealt with.
The second step consists of tripping the circuit so at to remove the flow of electricity.
The third step is to Cut the electricity off so to stop the leakage and be safe.
Answer:B
Explanation:
Given
For motor A
Characteristic life(r)=4100 hr
MTTF=4650 hrs
shape factor(B )=0.8
For motor B
Characteristic life(r)=336 hr
MTTF=300 hr
Shape Factor (B)=3
Reliability for 100 hours



For B


B is better for 100 hours
(b)For 750 hours


So here B is more Reliable.
Answer:
D.) Transfer input energy from the power source throughout the machine.
Explanation:
Since the complex abnormalities of energy efficiency is depicted by the autonomy within self-operating machines, the correct answer is D.