If heat transfer considerations require a 5°c temperature difference for heat transfer in the evaporator and in the condenser explain what effect this has on the cop and on the operating pressures

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.