Solve it correctly please. I will rate. A homeowner is considering these heating systems for heating his house: Electric resistance heating with $0.12/kWh and 1kWh = 3600 kJ, gas heating with $1.38/therm and 1 therm = 105,500 kJ, and oil heating with $2.3/gal and 1 gal of oil =138,500 kJ. Assuming efficiencies of 100 percent for the electric furnace and 87 percent for the gas and oil furnaces,determine the heating system with the lowest energy cost.The unit energy cost of natural gas heater is $× 10-6/kJ.The unit energy cost of heating oil heater is $10-6/kJ.The unit energy cost of electric heater is $10-6/kJ.The heating system with the lowest energy cost is natural gas heater v

Answered: Image /qna-images/answer/14fcfca7-ba4d-4447-aa9e-6322653d9b65.jpg

Answered: A homeowner is considering these…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Two spur gears transmit 36kW with a velocity ratio of 2:1. The speed of the smaller driving gear is 100rpm. The centre distance between the shafts is to be as near as possible to 920mm. If m=10 and all-21MPa, determine a) Diameter of the shafts b)PCD for each wheel c)Number of teeth on each wheel d) Actual centre distance [ e) Width of the teeth
A helical gear of 10 inches pitch diameter has a helix angle of 25 degree, and there are 35 teeth. The gear transmits 40 hp and rotates at 450 rpm with a normal pressure angle of 20 degrees. Find the axial force transmitted by the gear. A 252.26 lb B 225.26 lb C 522.26 lb D) 552.26 lb
SOLVE CAREFULLY!! Please Write Clearly and Box the final Answer
1)In a simple micrometer with screw pitch 0.5 mm and divisions on thimble 50, the reading corresponding to 5 divisions on barrel and 12 divisions on thimble is
Example 5: A 16-cm x 20-cm gas engine has a normal speed of 450 rpm. Determine a.) the speed, in rev/s and rad/s; b.) the linear velocity of the crank pin, in cm/s and m/s. If the engine is allowed to stop at a uniform rate in 3 minutes and 20 seconds, determine c.) the deceleration of the crank, in rad/s²; d.) the distance, in cm, traveled by the crankpin in coming to rest; and e.) the distance, in cm, traveled by the piston in coming to rest. A m L
system, the driver gear ear's axle by a certain small motor. Hand drills pm) are the number ocity ratio (VR) is abling гор task 2 Calculate mechanical advantage for gears using ratios n your own. rook at the gear train in Figure 15. Driver gear Teeth = 25 90 rpm ar the driver, the has 40 what is 04 cm 012 cm Driven gear Teeth = 75 2. d) b) a) Figure 15 Determine how many times the driven gear will rotate for every full rotation of the driver gear. Use the gear wheel diameter formula. Use the tooth ratio formula to calculate the gear ratio of the gear train. (3) Calculate the output speed of the driven gear. Look at the gear train in Figure 16. Calculate the velocity ratio of the driven gear. Calculate the velocity ratio in revolutions per minute at gear C. Driver gear Teeth = 15 Idler gear Teeth = 45 (4) (3) (3) (8) Figure 16 A B Driven gear Teeth = 5
Calculate to the correct number of significant figures. 89.3x77.0x0.08
Specify a flatness tolerance of .004 for the top surface of the part in the drawing below. O O O A. B. C. D. B A D 3.000 .004 .004 B .004 A .004 1.000 XXX = +.005 ANGLES = ± 1°
SHOW YOUR SOLUTIONS,
1. What revision is this part on? 2. How many dimensions are expressed using the limit method? 3. What is the surface texture in microinches is specified for the cylinder surface with a maximum material condition of 1.250"? Leave out the units, it is microinches, just type the number. Thanks :)!
A shaft has to be assembled with a hole. The shaft has maximum limit 59.762 and minimum limit 59.56, and the hole has a maximum limit 60.24 and a minimum limit 60.04, compute the following: Tolerance of the shaft is Tolerance of the hole is Shaft size according to MMC = Shaft size according to LMC = Maximum clearance = Minimum clearance = Hole size according to MMC = Hole size according to LMC =
A 16-cm x 20-cm gas engine has a normal speed of 450 rpm. Determine a.) the speed, in rev/s and rad/s; b.) the linear velocity of the crank pin, in cm/s and m/s. If the engine is allowed to stop at a uniform rate in 3 minutes and 20 seconds, determine c.) the deceleration of the crank, in rad/s²; d.) the distance, in cm, traveled by the crankpin in coming to rest; and e.) the distance, in cm, traveled by the piston in coming to rest.

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