Thiss takehome Exam theyve 23 multiple choice questions Th

** This\'s take-home Exam & they\'ve 23 multiple choice questions. This\'s PTAC 1410-Process Technology I-Equipment 1\'s class (Process Technology). Please, help me to find the answers all of these questions. Thank you so much. **

Q3. A progressive cavity pump typically has ……………….. screw(s)

(a) One

(b) Two

(c) Three

(d) b and c

Q8. The best material of construction choice for a hot, extremely corrosive process is

(a) Brass

(b) Stainless steel

(c) Hasteloy

(d) Carbon steel

Q11. The effect of temperature on viscosity is generally that viscosity ……………

(a) Is not affected by temperature

(b) Increases as temperature decrease

(c) Decrease as temperature decrease

(d) Increase as temperature increase

Q12. Which are two dynamic compressors?

(a) Centrifugal and axial

(b) Dynamic and rotary

(c) Rotary and reciprocating

(d) Axial and centronic

Q15. A butterfly valve can be used for …………….

(a) Throttling services

(b) On-off services

(c) Cooling tower water services

(d) All of the above

Q17. A check valve responds to which of the following scientific principles

(a) Density and viscosity

(b) Fluid flow and gravity

(c) Pressure and temperature

(d) Laminar and turbulent flow

Q19. Heat exchangers effectiveness is linked to all of the following except

(a) Differential temperature

(b) Flow rate

(c) Flame strength

(d) Pressure drop

Q22. The steam-generating tubes are connected to the

(a) Mud drum and steam-generating drum

(b) Riser and downcomer

(c) Economizer and water make-up

(d) Superheated and desuperheated

Q23. The heat exchanger that is designed to take the highest flow rates and largest temperature difference is

(a) Floating head, multipass

(b) Doubles pipe

(c) U-tube

(d) Plate and frame

Q24. The basic principles that allow an electric motor to operate include all of the following except

(a) Current direction determines the magnetic poles

(b) Electric current creates a magnetic field

(c) Magnetic poles attracts and repel each other

(d) Electric current closes the magnetic field

Q25. A typical globe valve directs flow

(a) Under the flow control element

(b) Above the flow control element

(c) Against the side of the flow control element

(d) All of the above depending on design

Q26. Internal slip is defined as

(a) Fluctuation of suction pressure created by the intake stroke

(b) Percent of fluid that leaks by the internal clearance over a given time

(c) Difference between how much liquid a pump can move versus how much it actually does

(d) b and c

Q30. The seats in a gate valve fall into which two categories

(a) Labyrinth and mechanical

(b) Replaceable and fixed

(c) Self-guiding and fixed

(d) Replaceable and moveable

Q31. What two types of blinds are used

(a) Flat and plate

(b) Paddle and figure eight

(c) Solid and wedge

(d) Orifice and paddle

Q33. A type of boilers that passes hot gases through tubes to heat up and vaporize water is a

(a) Water tube boiler

(b) Reboiler

(c) Fire tube boiler

(d) Steam turbine

Q34. Industrial air is used primarily to operate

(a) Purge tanks

(b) Electric actuators, controllers, and transducers

(c) Pneumatic tools and pneumatic equipment

(d) Hydraulic actuators, controller, and transducers

Q35. An external gear pumps include all of the following components except

(a) Idler gear

(b) Casing

(c) Power gear

(d) Spacer

Q38. A positive displacement pump comes in ………………. Basic designs

(a) Two

(b) Four

(c) One

(d) Three

Q39. Explain how a centrifugal pump operates

(a) Dynamically spins liquid axially into discharge

(b) Positively displaces liquid with a rotary motion

(c) Spins liquid from the suction eye into a volute

(d) Positively displaces fluid with a reciprocating motion

Q41. A cooling tower is classified by how

(a) It produces air flow

(b) The air flows in relation to the downward flow of water, cross, or counter current

(c) The water flows in relation to the downward flow of air, cross or counter

(d) a and b

Q43. The advantages of a centrifugal pumps include all the following except

(a) It delivers a more constant rate

(b) It works well with liquid and gas phases

(c) It is easier to install

(d) It is cheaper

Q44. Carbon deposits are most likely to be found in

(a) Convection section terminal penetration

(b) Convection tube

(c) Radiant tube

(d) Pre-heat tube

Q45. A jet pump is classified as a(n)

(a) Axial pump

(b) Centrifugal pump

(c) Positive displacement pump

(d) Dynamic pump

Solution

3. a

8. b

11. b

12. c

15. d

17. c

19. c

38. a

43. b, because pumps are mainly used for liquids