Which of these statements about double clutching and shifting is true? a. If you miss a gear while up-shifting, you must bring the vehicle to a stop.

b. Double clutching should only be used with a heavy load.

c. Double clutching should not be used when the road is slippery.

d. You can use the tachometer to tell you when to shift.

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.

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?