Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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- The equation of the turning moment diagram for the three crank engine is given by: T(N.m) =25000 - 7500 sin 3theta where θ radians is the crank angle from inner dead cen?tre. The moment of inertia of the flywheel is 400 kg-m2 and the mean engine speed is 300 r.p.m. Calculate the power of the engine and the total percentage fluctuation of speed of the flywheel, if 1. The resisting torque is constant, and 2. The resisting torque is (25 000 + 3600 sin θ ) N-m.arrow_forwardThe equation of the turning moment diagram for the three crank engine is given by:where θ radians is the crank angle from inner dead cen?tre. The moment of inertia of the flywheel is 400 kg-m2 and the mean engine speed is 300 r.p.m. Calculate the power of the engine and the total percentage fluctuation of speed of the flywheel, if 1. The resisting torque is constant, and 2. The resisting torque is (25 000 + 3600 sin θ ) N-m.arrow_forwardFind the average piston velocity (between limiting positions) for an in-line slider-crank mechanism. The crank length is 2inch, and the crank rotates at 3000rev/min.arrow_forward
- The turning moment diagram for the engine is drawn to the following scales: Turning moment, 1 mm = 1000 N-m and crank angle, 1 mm = - 6°. The areas above and below the mean turning moment line taken in order are : 530, 330, 380, 470, 180, 360, 350 and 280 mm². The mean speed of the engine is 150 r.p.m. and the total fluctuation of speed must not exceed 3.5% of mean speed. Determine the diameter and mass of the flywheel rim, assuming that the total energy of the flywheel to be 15/14 that of rim. The peripheral velocity of the flywheel is 15 m/s. Find also the suitable cross-scetional area of the rim of the flywheel. Take density of the material of the rim as 7200 kg/m³. [Ans. 1.91 m; 8063 kg; 0.1866 m²]arrow_forwardHi, could you please help with the following question please thank youarrow_forwardHello, Could you please help with the question attached or give guidance please, thnk youarrow_forward
- 2. A 75 kW induction motor runs at 740 rpm in clockwise direction. A 19 tooth helical pinion with20 degree normal pressure angle, 10 mm normal module and a helix angle of 23 degree is keyed to the motor shaft. Draw a 3-dimensional sketch of the motor shaft and the pinion. Show the forces acting on the pinion and the bearing at A and B. The thrust should be taken out at A All dimensions are in mm y 750 B 200 Z2=38 Z₁ = 19 Xarrow_forwarda) Derive the Jacobian to relate the joint velocities to the tool-point velocities. b) Calculate the tool point linear velocity if joint 1 is rotating at 1.5 rad/s and joint 2is rotating at 2 rad/s (a1 = 1.5, a2 = 3.5 θ1= 155 degrees, θ2 = -120 degrees).arrow_forwardASAParrow_forward
- What do you mean by I.C.R.? What are the formulae for calculating I.C.R for all mechanisms? How will you find I.C.R. of velocity for 4 bar chain mechanisms and single slider crank mechanism? How will you find graphically & analytically the methods of velocity & acc. Analysis of 4-bar chain mechanism and single slider crank mechanism?arrow_forwardWhat is the power (?) lost to main crankshaft friction in a four-cylinder engine with a 100mmbore and stroke if the engine is operating at 1500 rpm? Assume the main crankshafthas five bearings, each with a diameter of 50 mm and length of 25 mm.arrow_forwardjustt using the rule attached plss i need her all slovingarrow_forward
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