Strong mathematical, analytical, and problem solving skills. Also technical Expertise, creativity and Innovative thinking, and attention to detail.
Answer:
6222.22 sec
Explanation:
Given data the power input to the refrigerator is 450 W
The COP of refrigerator is 1.5
Temperature 
mass of watermelon =10 kg
specific heat =4.2 KJ/kg°C
The amount of heat removed from 5 watermelon
We know that 
W=0.675 KW
so time required to cool the watermelon is
I pretty sure it would be A
Answer:
Forced vibrations and self-generated vibrations
Explanation:
Forced vibration is caused due to the motion of the cutting operation itself it is common in operations that have interrupted cutting like milling.
The size of the chips are related to self-generated vibrations. If larger chips are formed this means higher depth of cut is given. If smaller chips are formed this means lower depth of cut is given. When we give excess depth of cut then self-generated vibrations are produced.
