What is a differential?
What will be an ideal response?
A differential is a geared mechanism located between the two driving axles. It rotates the driving axles at different speeds when the vehicle is turning a corner. It also allows both axles to turn at the same speed when the vehicle is moving straight. The drive axle assembly directs driveline torque to the vehicle's drive wheels. The gear ratio of the differential's ring and pinion gear is used to increase torque, which improves driveability. The differential serves to establish a state of balance between the forces or torques between the drive wheels and allows the drive wheels to turn at different speeds when the vehicle changes direction.
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Which of the following statements is accurate?
An ammonia synthesis process works as follows: Fresh feed air and hydrogen are combined with a recycle stream and the combined stream is compressed to 10 MPa. The compressed stream enters a reactor, and a fraction of the entering nitrogen and hydrogen are converted into ammonia. The reactor effluent, still at 10 MPa, enters a condenser. The liquid and vapor streams leaving the condenser are in VLE. The liquid stream, which is almost pure ammonia, is the product. A fraction of the vapor stream leaving the condenser is purged, while the rest is recycled. A. Raoult’s Law would be a reasonable way to model the VLE for ammonia in the condenser. B. Henry’s Law would be a reasonable way to model the VLE for oxygen in the condenser. C. If we increase the size of the reactor, allowing a larger fraction of the nitrogen and hydrogen to be converted to ammonia, it won’t lead to an increase in the liquid product flow rate, because the product flow rate is limited by the equilibrium constraint in the condenser. D. If we maintain the same flow rate of entering feeds, but we purge a smaller fraction of the vapor leaving the condenser, then the mole fraction of oxygen in the purge stream will go down. E. None of the above are true.
Bubbles in the sight glass always indicate refrigerant shortage.
Answer the following statement true (T) or false (F)
A ____ is responsible for scheduling and assigning work, ensuring that all functions of the CAD department are carried out properly and on time.
A. CAD manager B. chief CAD supervisor C. drafting CEO D. CAD department leader
The cutting operation that cuts wood with the grain is called __________.
Fill in the blank(s) with the appropriate word(s).