Theory and Design for Mechanical Measurements
6th Edition
ISBN: 9781118881279
Author: Richard S. Figliola, Donald E. Beasley
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 6, Problem 6.2P
Plot the torque on a current loop as a function of the angle between the normal to the cross-sectional area of the current loop and the magnetic field for
N = 100 A = 5 x 10~4 m2 / = 100 mA B = 1 Wb/m2
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Q1. Long-shunt generator delivers a load current of 30 A at 220 V. It has armature and shunt field resistances of 0.050, 2000 respectively: A- calculate the generated emf, the copper loss in armature, shunt field loss and the total copper loss. B-if the iron and friction loss is 1000W. Calculate the electrical efficiency, mechanical efficiency, commertial efficiency and maximum efficiency. (Armature reaction may be neglected) Q2. A 220V, 4-pole, lap-connected, shunt motor with 800 conductors in armature slots. The armature and shunt field resistance are 0.62 and 2200 respectively. The motor runs to supply load with 8000W and draw current (50amps) from the mains. The flux per pole is 25mWb A- Calculate the gross torque developed by the armature, the shaft torque (useful), and the lost torque. B- Calculate the gross power developed by the armature, the iron and friction lost power, mechanical efficiency, electrical efficiency, and the overall efficiency. Armature reaction may be…
1) A 100-V shunt motor is developing 6 hp while operating at an overall efficiency of 86%. The armature and shunt field resistances are 0.06 and 50 ohms respectively. Determine the stray power losses.
2) The field and armature resistance of a 400 V shunt motor are 200 ohms and 0.1 ohms, respectively. The motor takes 30 A of current while running at 1000 rpm. If the frictional losses are 400 W, determine the motor efficiency.
3) In a brake test of an elevator door, the ammeter and voltmeter measuring the input read 34 A at 220 V. The speed of the motor is found to be 910 rpm and the balance on the 0.61 m brake arm reads 11.9 kg. The dead weight of the arm is found to be 1.09 kg. What is the hp output of the motor?
A brake test is carried out with a balance and a direct current motor. The purpose of this experiment is to calculate the torque on the motor shaft. The following values were obtained in the experiment. U=220 volts., I=107 amps, n = 1200 rpm. The length from the axis of the motor shaft to the point where the brake lever presses on the scale is L=80 cm. and the weight read on the balance G = 20 Kg. is Accordingly, calculate the following values:
a) the shaft power taken from the shaft of the motor,
b) the electrical power drawn by the motor from the mains
c) motor total losses and motor efficiency
Calculate
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
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- A solid steel shaft transmits 50 KW of power at the frequency of (50/ π) Hz. The initial torque needed in the shaft is A) 812 N-m B) 678 N-m C) 541 N-m D) 500 N-marrow_forwardA motor drives a hoist which raises a load of 1000 kg with a velocity of 1 m/sec, calculate the input power of the motor assuming the hoist gearing efficiency to be 0.8, motor efficiency to be 0.75 .arrow_forward5. 30,000 kW at power factor 0-8 lagging is being transmitted over a 220 kV, three-phase transmission line. The length of the line is 275 km and the efficiency of transmission is 90%. Calculate the weight of copper. Also calculate the weight of copper had the power been transmitted over a single-phase transmission line tor the same line voltage and losses. ASsume that the resistance of 1km long conductor and 1sq.cm is 0.173 andspecific gravity of copper is 8-9.arrow_forward
- A rope wound shaft 20 mm diameter pulls up 600 N load. Friction is equivalent to a given torque of 0.5 Nm. What is the torque required to accelerate the load upward 2 m/sec^2. Mass of the shaft is 3 kg.arrow_forwardA solid shaft 15 meters long is stressed to 85 MPa when twisted through 6 degrees. If G = 83 GPa. What power in kW can be transmitted at 1000 rpm?arrow_forwardplease provide a step by step solution, thank you What is the amount of power an electric motor produces if a 25 kN-m torque is applied to its 32 mm diameter shaft at an 8 Hz frequency? Answer in MWarrow_forward
- A shaft is fixed at support C and has a torque of 75lb.ft with respect to free end at a distance of 0.75ft from C. It remains constant for 0.75ft before a negative uniformly distributed torque of 1200lb.ft/ft at a distance of 1.5ft is introduced. The shaft then remains flat for 1.5ft to free end with a torque of 600lb.ft. where in the shaft is the torque equals to negative 1200lb.ft measured from the free end?arrow_forwardA piezoelectric actuator is made from a stack of 20 square piezoelectric pads, each 10mm square with a thickness of 2mm? Calculate the displacement when 1kV is applied if a load of 200N is externally applied. Given that: d33=100×10-12 C/N, er = 50 and Y = 50GPa.arrow_forwardA belt wrapped around a pulley 600 mm in diameter has a tension of 800 N on the tight side and a tension of 180 N on the slack side. What power in kW is being transmitted if the pulley is rotating 200 rpm? The correct answer is 3.89 kWarrow_forward
- Calculate the power "P" in watts of a motor rotating at a speed "n" of 1740 r/min and producing a torque "t" of 1.4 N·m (12.4 lbf·in).arrow_forwardThe figure below shows a conducting rod sliding along a pair of conducting rails. The conducting rails have an angle of inclination of θ = 32.0 degrees. There is a resistor at the top of the ramp that connects the two conducting rails (R = 1.5 ohms). The mass of the rod is 0.43 kg. The rod starts from rest at the top of the ramp at time t = 0. The rails have negligible resistance and friction, and are separated by a distance L = 15.3 m. There is a constant, vertically directed magnetic field of magnitude B = 1.40 T. What is the rod's terminal speed?arrow_forwardAn electric train made up of two cars, each weighing50,000lb, is connected by couplings of stiffness equal to16,000lb/in., as shown in the figure below. Determine the natural frequency of the system.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
First Law of Thermodynamics, Basic Introduction - Internal Energy, Heat and Work - Chemistry; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=NyOYW07-L5g;License: Standard youtube license