Bundle: Refrigeration And Air Conditioning Technology, 8th + Lab Manual + Lms Integrated For Mindtap Hvac-r, 4 Terms (24 Months) Printed Access Card
8th Edition
ISBN: 9781337087315
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 1, Problem 13RQ
Specific heat is the amount of heat necessary to raise the temperature of 1 lb of a ______1°F.
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7. A motor shaft rotating at 1440 r.p.m. has to transmit 15 kW to a low speed shaft rotating at 500 r.p.m.
The teeth are 20° involute with 25 teeth on the pinion. Both the pinion and gear are made of cast iron
with a maximum safe stress of 56 MPa. A safe stress of 35 MPa may be taken for the shaft on which
the gear is mounted. Design and sketch the spur gear drive to suit the above conditions. The starting
torque may be assumed as 1,25 times the running torque.
Ruins 20 LW at 100 nm to another shaft running approxi
6.
A two stage reduction drive is to be designed to transmit 2 kW; the input speed being 960 r.p.m. and
overall reduction ratio being 9. The drive consists of straight tooth spur gears only, the shafts being
spaced 200 mm apart, the input and output shafts being co-axial.
2 A metal block of mass m = 10 kg is sliding along a frictionless surface with an initial speed
Vo, as indicated below. The block then slides above an electromagnetic brake that applies a
force FEB to the block, opposing its motion. The magnitude of the electromagnetic force
varies quadratically with the distance moved along the brake (x):
10
FEB = kx²,
with k
= 5
N
m²
V₁ = 8 m/s
m = 10 kg
FEB
Frictionless surface
Electromagnetic brake
⇒x
Determine how far the block slides along the electromagnetic brake before stopping, in m.
Chapter 1 Solutions
Bundle: Refrigeration And Air Conditioning Technology, 8th + Lab Manual + Lms Integrated For Mindtap Hvac-r, 4 Terms (24 Months) Printed Access Card
Ch. 1 - Temperature is defined as A. how hot it is. B. the...Ch. 1 - State the standard conditions for water to boil at...Ch. 1 - List four types of temperature scales.Ch. 1 - Under standard conditions, water freezes at ____C.Ch. 1 - Molecular motion stops at _______F.Ch. 1 - One British thermal unit will raise the...Ch. 1 - In which direction does heat flow? A. From a cold...Ch. 1 - Describe heat transfer by conduction.Ch. 1 - Increase in sensible heat causes A. a higher...Ch. 1 - Latent heat causes A. a higher thermometer...
Ch. 1 - Describe how heat is transferred by convection.Ch. 1 - Describe how heat is transferred by radiation.Ch. 1 - Specific heat is the amount of heat necessary to...Ch. 1 - Atmospheric pressure at sea level under standard...Ch. 1 - To change from psig to psia, you must add...Ch. 1 - Convert 80F of Celsius.Ch. 1 - Convert 22C to Fahrenheit.
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