What is the main purpose of the alternator?

to regulate the speed of the car

to keep the engine cool

to maintain constant oil pressure

to power the car's electrical system

Higher molecular weight results in worst mechanical properties. a) - True b) - false?

1 - A square-wave inverter has a dc source of 96 V and an output frequency of 60 Hz. The load is a series RL load with R = 5 Ohm and L = 100 mH.

ladders are not required to be inspected for visible defects prior to the first use of each work shift, and after any occuurrence that could affect their safety ... True or False?

Because A-B=A + (-B), the subtraction of signed numbers can be accomplished by adding the complement. Subtract each of the following pairs of 5-bit binary numbers by adding the complement of the subtrahend to the minuend.

Which of the following statements is true about alcoholism A. Dependency on alcohol leads to alcoholism B. Alcohol dependency can be psychological only C. Alcohol dependency can be physical only D. Teens cannot become alcoholics

The Reynolds number, rhoVD/μ is a very important parameter in fluid mechanics. Determine its value for ethyl alcohol flowing at a velocity of 4 m/s through a 2-in.-diameter pipe.

Work done by a system during a process can be considered as a property of the system. a) True b) False

When the compression process is non-quasi-equilibrium, the molecules before the piston face cannot escape fast enough, forming a high-pressure region in front of the piston. It takes more work to move the piston against this high-pressure region.

hypothetical A-B alloy of composition 40 wt% B-60 wt% A at some temperature is found to consist of mass fractions of 0.66 and 0.34 for the α and β phases, respectively.

10. Which of these requires a wheel alignment after replacement? A. Struts B. Shocks C. Both