Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN: 9781337399128
Author: Russell E. Smith
Publisher: Cengage Learning
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Chapter 8, Problem 45RQ
True or False: The control module determines the speed of the compressor in order to meet the load of the structure.
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Chapter 8 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Ch. 8 - What is magnetism?
Ch. 8 - How is an electromagnet produced?
Ch. 8 - Which of the following correctly lists the motor’s...Ch. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - Prob. 17RQCh. 8 - Prob. 18RQCh. 8 - Prob. 19RQCh. 8 - Prob. 20RQ
Ch. 8 - Prob. 21RQCh. 8 - What is the unit of measurement for the strength...Ch. 8 - Prob. 23RQCh. 8 - Prob. 24RQCh. 8 - List the five capacitor replacement rules.
Ch. 8 - Prob. 26RQCh. 8 - Prob. 27RQCh. 8 - What are the advantages and disadvantages of using...Ch. 8 - Prob. 29RQCh. 8 - Prob. 30RQCh. 8 - Prob. 31RQCh. 8 - True or False: All starting apparatuses are...Ch. 8 - Prob. 33RQCh. 8 - Which of the following is the capacitance of an...Ch. 8 - Which of the following is the capacitance of two...Ch. 8 - If a capacitor produces 15 ampere on a 240-volt...Ch. 8 - Which of the following capacitors could be used to...Ch. 8 - Which of the following capacitors could be used to...Ch. 8 - Which of the following capacitors or combination...Ch. 8 - Which of the following capacitors or combination...Ch. 8 - Find the common, start, and run terminals of the...Ch. 8 - Briefly explain the procedure for troubleshooting...Ch. 8 - What are the electrical failure categories for...Ch. 8 - What precautions should be taken when checking...Ch. 8 - True or False: The control module determines the...Ch. 8 - Explain the operation of the direct current motor...Ch. 8 - Prob. 47RQCh. 8 - Prob. 48RQCh. 8 - Explain the construction of an ECM.
Ch. 8 - An ECM is a __________.
three-phase, AC...Ch. 8 - True or False: The resistance readings of the...Ch. 8 - True or False: The line voltage power supply of an...
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- 3 Water at 15°C ( p = 999.1 kg/m³ and µ = 1.138 × 10¯³kg/m.s) is flowing steadily in a 34-m-long and 6-cm-diameter horizontal pipe made of stainless steel at a rate of 10 L/s. Determine the pressure drop, the head loss, and the pumping power requirement to overcome this pressure drop. The roughness of stainless steel is 0.002 mm. 10 L/s 6 cm L The pressure drop is 34.77 kPa. The head loss is 3.55 m. (Round the final answer to two decimal places.) The pumping power requirement is 0.348 kW. (Round the final answer to three decimal places.)arrow_forward6 10 ints awarded Scored Gasoline ( p = 680 kg/m³ and v = 4.29 × 107 m²/s) is transported at a rate of 240 L/s for a distance of 2 kilometre. The surface roughness of the piping is 0.03 mm. If the head loss due to pipe friction is not to exceed 14 m, determine the minimum diameter of the pipe using the third Swamee-Jain formula. (Round the final answer to three decimal places.) The minimum diameter of the pipe is 0.443 m.arrow_forward1 Water at 15°C ( p = 999.1 kg/m³ and µ = 1.138 × 10¯¯³kg/m.s) is flowing steadily in a 34-m-long and 6-cm-diameter horizontal pipe made of stainless steel at a rate of 10 L/s. Determine the pressure drop, the head loss, and the pumping power requirement to overcome this pressure drop. The roughness of stainless steel is 0.002 mm. eBook Hint 10 L/s 6 cm L The pressure drop is The head loss is kPa. |m. (Round the final answer to two decimal places.) The pumping power requirement is three decimal places.) kW. (Round the final answer toarrow_forward
- 3 eBook Hint Air enters an 15-m-long section of a rectangular duct of cross section 15 cm x 20 cm made of commercial steel at 1 atm and 35°C at an average speed of 5 m/s. Disregarding the entrance effects, determine the fan power needed to overcome the pressure losses in this section of the duct. The properties of air at 1 atm and 35°C are p = 1.145 kg/m³, µ = 1.895 × 10−5 kg/m·s, and v = 1.655 × 10¯5m²/s. The roughness of commercial steel surfaces is = 0.000045 m. (Round the final answer to three decimal places.) L 15 cm Air 20 cm 5 m/s The fan power needed to overcome the pressure losses is 4.0695 W.arrow_forward12) A particle is moving along a circular path having a radius of 6 in. such that its position as a function of time is given by 0 = sin 3t, where 0 is in radians, the argument for the sine are in radians, and t is in seconds. Determine the acceleration of the particle at 0 = 30°. The particle starts from rest at 0 = 0°.arrow_forward6) == The particle travels along the path defined by the parabola y 0.5x2. If the component of velocity along the x axis is Vx = (5t) ft/s, where t is in seconds, determine the particle's distance from the origin O and the magnitude of its acceleration when t = 1s. When t 0, x = 0, y = 0. =arrow_forward
- 7) Determine the minimum initial velocity vo and the corresponding angle 00 at which the ball must be kicked in order for it to just cross over the 3-m high fence. VO θα 6 m 3 marrow_forward11) = If a particle moves along a path such that r = (2 cost) ft and (t/2) rad, where t is in seconds, plot the path r = f(0) and determine the particle's radial and transverse components of velocity and acceleration.arrow_forward9) The car travels around the circular track having a radius of r = 300 m such that when it is at point A it has a velocity of 5 m/s, which is increasing at the rate of v = (0.06t) m/s², where t is in seconds. Determine the magnitudes of its velocity and acceleration when it has traveled one-third the way around the track.arrow_forward
- 15) Two boats leave the pier P at the same time and travel in the directions shown. If v = 40 ft/s and vB = 30 ft/s, VA determine the velocity of boat A relative to boat B. How long after leaving the pier will the boats be 1500 ft apart? =40 ft/s UB=30 ft/s 30° 45°arrow_forward14) Determine the time needed for the load at B to attain a speed of 10 m/s, starting from rest, if the cable is drawn into the motor with an acceleration of 3 m/s². C Barrow_forward13) Starting from rest, the cable can be wound onto the drum of the motor at a rate of v₁ = (31²) m/s, where t is in seconds. Determine the time needed to lift the load 7 m. 40 D A C Barrow_forward
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