Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
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Chapter 6, Problem 6.15P
Consider a Wheatstone bridge circuit that has all resistances equal to 100 Q. One arm of the bridge is a sensor that cannot sustain a power dissipation of more than 0.25 W. What is the maximum value of Ei that can be employed for this bridge?
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2. Figure 1 shows a sensor consists of a core, an armature and a variable air gap. The core with
3.0 cm depth and 10000 relative permeability has 200 coil turns. On the other hand, the armature
is a steel plate of thickness 0.2 cm and has similar relative permeability with the core. Assuming
the relative permeability of air is unity and the permeability of free space is equal to 4x x 10-7
H.m, calculate the inductance of the sensor for air gaps of 0 mm and 2 mm. Please write the
answers in 3 decimal places.
2.0 cm
1.0 cm
6.0 cm
3.0 cm
1.5 cm
Figure I
A thermocouple has an output emf as shown in the following table when its hot (measuring) junction is at the temperatures shown. Determine the sensitivity of measurement for the thermocouple in mv/"C. Temperature (C) 3.5 13
4 12
Voltage imv)
Sensitivity, S
d. At t=0, temperature of water suddenly changed from 25°C to 100°C. The transfer function of
the sensor is given as V=(0.06V/°C) (T- 20°C). The output voltage was measured every 0.1s
and recorded in Table 1. Find the equation explaining the dynamic behaviour of the sensor.
Table 1
Time (sec)
0.0
0.1
0.2
0.3
0.4
0.5
Voltage (V)
0.3
1.8
2.8
3.4
3.9
4.2
Chapter 6 Solutions
Theory and Design for Mechanical Measurements
Ch. 6 - Prob. 6.1PCh. 6 - Plot the torque on a current loop as a function of...Ch. 6 - Prob. 6.3PCh. 6 - Prob. 6.4PCh. 6 - Prob. 6.5PCh. 6 - For the voltage-dividing circuit of Figure 6.14,...Ch. 6 - Prob. 6.7PCh. 6 - Prob. 6.8PCh. 6 - Consider a deflection bridge arrangement as shown...Ch. 6 - Prob. 6.10P
Ch. 6 - Prob. 6.11PCh. 6 - Prob. 6.12PCh. 6 - Prob. 6.13PCh. 6 - Prob. 6.14PCh. 6 - Consider a Wheatstone bridge circuit that has all...Ch. 6 - Prob. 6.16PCh. 6 - Prob. 6.17PCh. 6 - 6.18 A differential pressure transducer transmits...Ch. 6 - Problems 6.19 through 6.22 relate to the...Ch. 6 - Problems 6.19 through 6.22 relate to the...Ch. 6 - Problems 6.19 through 6.22 relate to the...Ch. 6 - Problems 6.19 through 6.22 relate to the...Ch. 6 - Prob. 6.23PCh. 6 - Prob. 6.24PCh. 6 - 6.25 Design a cascading LC low-pass filter with...Ch. 6 - 6.26 An electrical displacement transducer has an...Ch. 6 - Prob. 6.27PCh. 6 - Transducer
R
Figure 6.41 pH transducer circuit for...Ch. 6 - 6.29 Consider the circuit of Figure 6.42, which...Ch. 6 - 6.30 What internal impedance is needed for the...Ch. 6 - 6.31 The input to a subwoofer loudspeaker is to...Ch. 6 - 6.31 The input to a subwoofer loudspeaker is to...Ch. 6 - 6.33 A high-pass Butterworth filter with cutoff...Ch. 6 - 6.34 Design an active-RC low-pass first-order...Ch. 6 - 6.35 Design an active-RC first-order high-pass...Ch. 6 - Prob. 6.37PCh. 6 - Prob. 6.38PCh. 6 - The Labview program Filtering_Noise demonstrates...Ch. 6 - Labview program Monostable Circuit provides a...Ch. 6 - 6.42 Consider a Wheatstone bridge that has been...Ch. 6 - Prob. 6.43P
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