DESIGN OF MACHINERY
6th Edition
ISBN: 9781260113310
Author: Norton
Publisher: RENT MCG
expand_more
expand_more
format_list_bulleted
Question
Chapter 2, Problem 2.16P
a.
To determine
The electric motor suitable to drive a load with large inertia.
b.
To determine
The electric motor suitable to minimize the variation of speed with variation in load.
c.
To determine
The electric motor suitable to maintain accurate constant speed regardless variations in load.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Parameter
Value
Unit
Remarks
Inertia
36
tonne m?
Damping
20
N-m.s
Train mechanisms only
Load Torque
117.720
kN-m
A train has the effective total properties in the
preceding table. It is desired to be able to completely
stop the train from full speed in 15 seconds, while
maintaining rated supply to the field.
1. Find the number of DC motors needed to run and
decelerate the train without any motor being subjected
to more than its rated capabilities. Assume uniform
load distribution; identical machine models, terminal
voltages, and controls.
2. Derive an expression for the armature current la(t) in
each machine.
3. Derive an expression for the instantaneous terminal
voltage Va(t) required for the controllers. 4. Due to
practical limitations, it is often necessary to stop
regenerative braking once one of the following occurs:
zero-speed, zero Va(t), or zero la(t). Determine the
angular speed (in rpm) at which this occurs.
the figure shows a motor driving a two-output transmission system. The blower requires a certain amount of force to operate since the drum rotates at an angular acceleration of 0.03 rad/s2. Determine the torque produced by a motor with a torque of 700 Nm and a speed of 1,600 rpm. following:-
The power produced at the drum (P).
The torque requirement for the blower to operate (Tblower) and power generation (Pblower)
The overall efficiency transmission of the gear system, hO.
If the speed of motor is NOT given, explain without calculation how the overall efficiency transmission of the gear system can be obtained.
Given:-
Number of gear teeth, t:-
t1=40 ; t2=200 ; t3=50 ; t4=200 ; t5=40 ; t6=120 ; t7=60 and t8=120
Equivalent mass moment of inertia, Ieq:-
Imotor,5=25 kgm2 ; I23=10 kgm2 ; Iblower,4=15 kgm2 ; I67=20 kgm2 and Idrum,8=60 kgm2
Friction torque in bearing, Fb:-
A=F=25 Nm ; I=J =20 Nm ; B=C=G=H=5 Nm and D=E=10 Nm
Efficiency of all gear mesh, ⴄ=85%
I need the answer as soon as possible
Chapter 2 Solutions
DESIGN OF MACHINERY
Ch. 2 - Find three (or other number as assigned) of the...Ch. 2 - How many DOF do you have in your wrist and hand...Ch. 2 - How many DOF do the following joints have? Your...Ch. 2 - How many DOF do the following have in their normal...Ch. 2 - Are the joints in Problem 2-3 force closed or form...Ch. 2 - Describe the motion of the following items as pure...Ch. 2 - Calculate the mobility of the linkages assigned...Ch. 2 - Identify the items in Figure P2-1 as mechanisms,...Ch. 2 - Use linkage transformation on the linkage of...Ch. 2 - Prob. 2.10P
Ch. 2 - Use number synthesis to find all the possible link...Ch. 2 - Prob. 2.12PCh. 2 - Use linkage transformation to create a 1-DOF...Ch. 2 - Use linkage transformation to create a 1-DOF...Ch. 2 - Calculate the Grashof condition of the fourbar...Ch. 2 - Prob. 2.16PCh. 2 - Describe the difference between a cam-follower...Ch. 2 - Examine an automobile hood hinge mechanism of the...Ch. 2 - Find an adjustable arm desk lamp of the type shown...Ch. 2 - The torque-speed curve for a 1/8 hp permanent...Ch. 2 - Find the mobility of the mechanisms in Figure...Ch. 2 - Find the Grashof condition and Barker...Ch. 2 - Find the rotatability of each loop of the...Ch. 2 - Find the mobility of the mechanisms in Figure...Ch. 2 - Find the mobility of the ice tongs in Figure P2-6:...Ch. 2 - Prob. 2.26PCh. 2 - Prob. 2.27PCh. 2 - Find the mobility of the corkscrew in Figure P2-9.Ch. 2 - Figure P2-10 shows Watts sun and planet drive that...Ch. 2 - Figure P2-11 shows a bicycle handbrake lever...Ch. 2 - Figure P2-12 shows a bicycle brake caliper...Ch. 2 - Find the mobility, the Grashof condition, and the...Ch. 2 - The approximate torque-speed curve and its...Ch. 2 - Prob. 2.34PCh. 2 - Prob. 2.35PCh. 2 - Sketch the equivalent linkage for the cam and...Ch. 2 - Describe the motion of the following rides,...Ch. 2 - For the mechanism in Figure P2-1 a, number the...Ch. 2 - Repeat Problem 2-38 for Figure P2-1b.Ch. 2 - Repeat Problem 2-38 for Figure P2-1c.Ch. 2 - Prob. 2.41PCh. 2 - Find the mobility, the Grashof condition, and the...Ch. 2 - Find the mobility, the Grashof condition, and the...Ch. 2 - Figure P2-20 shows a Rube Goldberg mechanism that...Ch. 2 - All the eightbar linkages in Figure 2-11 part 2...Ch. 2 - Prob. 2.46PCh. 2 - Prob. 2.47PCh. 2 - Find the mobility of the mechanism shown in Figure...Ch. 2 - Find the mobility of the mechanism shown in Figure...Ch. 2 - Find the mobility of the mechanism shown in Figure...Ch. 2 - Find the mobility of the mechanism shown in Figure...Ch. 2 - Prob. 2.52PCh. 2 - Prob. 2.53PCh. 2 - Repeat Problem 2-38 for Figure P2-1f.Ch. 2 - Repeat Problem 2-38 for Figure P2-1g.Ch. 2 - For the example linkage shown in Figure 2-4 find...Ch. 2 - For the linkage shown in Figure 2-5b find the...Ch. 2 - Prob. 2.58PCh. 2 - Figure P2-21b shows a mechanism. Find its mobility...Ch. 2 - Prob. 2.60PCh. 2 - Figure P2-21 d shows a log transporter. Draw a...Ch. 2 - Figure P2-21e shows a plow mechanism attached to a...Ch. 2 - Figure P2-22 shows a Hart inversor sixbar linkage....Ch. 2 - Figure P2-23 shows the top view of the partially...Ch. 2 - Figure P2-24a shows the seat and seat-back of a...Ch. 2 - Figure P2-24b shows the mechanism used to extend...Ch. 2 - Figure P2-24b shows the mechanism used to extend...Ch. 2 - Figure P2-25 shows a sixbar linkage. Is it a Watt...Ch. 2 - Use number synthesis o find all the possible link...Ch. 2 - Use number synthesis to find all the possible link...Ch. 2 - Prob. 2.71PCh. 2 - For the mechanism in Figure P2-26, number the...Ch. 2 - Figure P2-27 shows a schematic of an exercise...Ch. 2 - Calculate the mobility of the linkage in Figure...Ch. 2 - Calculate the Grashof condition of the fourbar...Ch. 2 - The drum brake mechanism in Figure P2-4g is a...
Knowledge Booster
Similar questions
- Give one application of Electric Drives in the industry (ex. drives the fans of coolers in a gas plant). Create simple engineering drawing or diagram (ex. 2D, 3D, isometric, PFD, P&ID, etc.) for your chosen application.arrow_forwardAssume that you are to design a 3V V-belt drive. Given that input speed as 1750 rpm and nominal output speed as 725 rpm. Starting with belt linear velocity 4000 ft/min, specify the input sheeve D1 from the list above. D1 = ___ in. Provide write down steps including equations. *** 8.73 and 8.9 were marked incorrectarrow_forwardA drive has the following parametersMotor torque: T=150 –0.1N, N-m where N is the speed in rpm.Load torque: TL=100, N-m.Initially the drive is operating in steady state. The characteristics of the loadtorque are changed to TL =-100 Nm.(i) Calculate the initial and final equilibrium speeds.(ii) Can a motor load system with a passive load torque have an equilibrium speedin quadrant II ? What will be your answer if the load is active?arrow_forward
- Create a mechanism that is capable of rocking motion with 60° angle and a time ratio of 1:1.75 from a constant speed motor input.arrow_forwardDerive the equation of power transmitted by Flat - belt between two pulleys then find the equation of length of the belt. Also discuss the advantage and disadvantage of power transmission with belts.arrow_forwardWrite the kutzbach equation of the degree of freedom of any mechanism.arrow_forward
- 1: Determine a suitable capacity of a continuous rated motor for the following duty cycle: 100 kW for 5 minute, 20 kW for 10 minutes, then remain 5 minute at no load, the duty cycle is repeated indefinitely. Draw the load cycle.arrow_forwardHelp me pleasearrow_forwardFrom the 4-figure electric motor taken, 500Nm torque steps B and C by 200Nm and 300Nm is transmitted. to return to a bed They're giving permission. In this case a return relative to D Calculate (torsion additive).arrow_forward
- Assume that you are to design a 3V V-belt drive. Given that input speed as 1750 rpm and nominal output speed as 725 rpm. Starting with belt linear velocity 4000 ft/min, specify the output sheeve D2 once you specify D1 from last question. D2 = ___ in. Provide write down steps including equations. *** 21.07 and 21.1 were marked incorrectarrow_forwardQ3) A 220 V d.c series motor has armature and field resistances of 0.15 Q and 0.10 Q respectively. It takes a current of 30 A from the supply while running at 1000 rpm. If an external resistance of 1 Q is inserted in series with the motor, calculate the new steady state armature current and the speed. Assume the load torque remains constant.arrow_forwardneed help on this queation，thanksarrow_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