Mechanical Engineering Principles

272 MECHANICAL ENGINEERING PRINCIPLES Applications Platinum resistance thermometers may be used as calibrating devices or in app ...

THE MEASUREMENT OF TEMPERATURE 273 G Hot source Radiation from hot source Shield Sighting telescope Thermocouple Mirror Figure 2 ...

274 MECHANICAL ENGINEERING PRINCIPLES the hot source and the ammeter can be calibrated to read the temperature directly. Optical ...

THE MEASUREMENT OF TEMPERATURE 275 the amount of expansion and thus the temperature. The advantages of this instrument are that ...

276 MECHANICAL ENGINEERING PRINCIPLES junction, an e.m.f. is produced. This effect is used in a thermocouple to mea- sure: (a) e ...

THE MEASUREMENT OF TEMPERATURE 277 Assignment 7 This assignment covers the material contained in chapters 21 and 24. The marks f ...

278 MECHANICAL ENGINEERING PRINCIPLES A platinum resistance thermometer has a resistance of 24at 0°C. When mea- suring the tem ...

A list of formulae Formula Formula symbols Units Stress = applied force cross-sectional area σ= F A Pa Strain = change in length ...

280 MECHANICAL ENGINEERING PRINCIPLES Formula Formula symbols Units Angular velocity ω= θ t = 2 πn rad/s Linear acceleration a=r ...

A LIST OF FORMULAE 281 Formula Formula symbols Units compound pendulum T= 2 π √ (kG^2 +h^2 ) gh s Force ratio = load effort Move ...

282 MECHANICAL ENGINEERING PRINCIPLES Summary of standard results of the second moments of areas of regular sections Shape Posit ...

Greek alphabet Letter Upper case Lower case Alpha A α Beta B β Gamma γ Delta δ Epsilon E ε Zeta Z ζ Eta H η Theta θ Iota I ι ...

Answers to multiple-choice questions Chapter 1 (Exercise 7, Page 16) 1.(c) 2.(c) 3.(a) 4.(b) 5.(c) 6.(c) 7.(b) 8.(d) 9.(b) 10.(c ...

ANSWERS TO MULTIPLE-CHOICE QUESTIONS 285 Chapter 15 (Exercise 79, Page 180) 1.(c) 2.(c) 3.(f) 4.(e) 5.(i) 6.(c) 7.(h) 8.(b) 9.(d ...

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Index Absolute pressure, 232, 237 Acceleration, centripetal, 147, 148 linear and angular, 129 Aneroid barometer, 237 Angle of re ...

288 INDEX Flow nozzle, 249 Flow through an orifice, 254 Fluid flow, 247 pressure, 231 Follower, 203 Force, 1, 144 centrifugal, 1 ...

INDEX 289 Newton metre, 57, 105 Newton’s laws of motion, 136, 139, 144 Normal force, 170 Optical pyrometer, 273 Orifice plate, 2 ...

290 INDEX Thermometer, 212, 267 Tie, 40 Torsional vibrations, 196 Torsion of shafts, 120 Torque, 109, 113 Total radiation pyrome ...