A transmission shaft is supported between two bearings, which are 750 mm a part. Power is supplied to the shaft through a coupling, which is located to the left of the left-hand bearing. Power is transmitted from the shaft by means of a belt pulley, 450 mm in diameter, which is located at a distance of 200 mm to the right of the left-hand bearing. The weight of the pulley is 300 N and the ratio of the belt tension of tight and slack sides is 2:1. The belt tensions act in vertically downward direction. The shaft is made of steel FeE 300 (Syt = 300 N/mm2) and the factor of safety is 3. Determine the shaft diameter, if it transmits 12.5 kW power at 300 rpm from the coupling to the pulley. Assume (Ssy = 0.5Syt).

A transmission shaft is supported between two bearings, which are 750 mm a part. Power is supplied to the shaft through a coupling, which is located to the left of the left-hand bearing. Power is transmitted from the shaft by means of a belt pulley, 450 mm in diameter, which is located at a distance of 200 mm to the right of the left-hand bearing. The weight of the pulley is 300 N and the ratio of the belt tension of tight and slack sides is 2:1. The belt tensions act in vertically downward direction. The shaft is made of steel FeE 300 (Syt = 300 N/mm2) and the factor of safety is 3. Determine the shaft diameter, if it transmits 12.5 kW power at 300 rpm from the coupling to the pulley. Assume (Ssy = 0.5Syt).

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

ANSWER THE PROBLEM SOLVING, MAKE SURE YOUR ANSWERS ARE IN 4 DECIMAL PLACES. SHOW YOUR COMPLETE SOLUTION. 4. An 8 pole DC shunt generator with 778 wave connected armature conductor and running at 500 RPM supplies a load of 12.5 Ω resistance. Assuming that the flux per pole is 9.83 mWb, the armature resistance is 0.24 Ω and the field resistance is 250 Ω. Calculate the over-all and maximum efficiencies if the SPL is 300 watts.
SOLVE AND SHOW YOUR COMPLETE SOLUTION. ANSWERS SHOULD BE IN TWO DECIMAL PLACES. The armature of a two-pole dc machine has 30 slots, each slot has 4 conductors each. during its operation, only 75% of the conductors are directly under the pole. each pole measures 2 inches by 3 inches and produces ten million maxwells of flux. the armature core is 12 inches in length and 3.5 inches in diameter. the total resistance of the winding is 2 ohms. e) Determine the total torque exerted by the armature core in ft - lb if the winding is simplex lap winding.
SOLVE AND SHOW YOUR COMPLETE SOLUTION. ANSWERS SHOULD BE IN TWO DECIMAL PLACES. The armature of a two-pole dc machine has 30 slots, each slot has 4 conductors each. during its operation, only 75% of the conductors are directly under the pole. each pole measures 2 inches by 3 inches and produces ten million maxwells of flux. the armature core is 12 inches in length and 3.5 inches in diameter. the total resistance of the winding is 2 ohms. b) determine the total generated voltage if the armature is running at 1000 rpm and its winding is simplex lap connected.
a toroidal iron core with air gap problem...
Frictional loss is under what losses : A) None of these B) mechanical losses C) Copper Losses D) Stray power losses
The bearings and commutator rotation of the DC machines which causes the O Hysteresis loss O Ohmic loss O Friction loss O Eddy current loss
A DC series generator with 12-pole has a simplex lap-wound armature has 200 coils of 10 turns each. The resistance of each turn is 0.011 Q. Its magnetic flux per pole is 0.05 Wb and the armature rate speed is 20.95 rad/sec. (i) Calculate the generated voltage. (ii) Calculate the armature resistance of the generator. (iii) A 1 kQ resistor is now connected in series to the terminals of the generator. What is the total produced counter-torque of the machine?
A. The brushes used in a DC generator a) ride against the commutator segments. b) are made from material softer than the commutator segments. c) are generally marked Al and A2 d) all of the above B. A magneto is a DC generator that uses for its pole pieces. a) electromagnets b) permanent magnets c) either "a" or "b" d) neither "a" nor "b"
4-pole, d.c. shunt motor has a flux per pole of 0.04 Wb and the armature is lap-wound with 720 conductors. The shunt field resistance is 240 Ω and the armature resistance is 0.2 Ω. Brush contact drop is 1V per brush. Determine the speed of the machine when running (a) as a motor taking 60 A and (b) as a generator supplying 120 A. The terminal voltage in each case is 480 V. 5 3 K4 8 Derive the Torque equation of a D.C Motor.
A DC generator has eight poles, wound as lap then rewound as a wave, calculate the electrical motive force generated in each case if you know that the number of conductors in the armature slots is 240 . The magnetic flux of each pole 0.04 Wb. It runs at 1200 rpm
A DC generator has eight poles, wound as lap then rewound as a wave, calculate the electrical motive force generated in each case if you know that the number of conductors in the armature slots is 240 . The magnetic flux of each pole 0.04 Wb. It runs at 1200 rpm
An electromechanical open-loop control system is shown in the figure below. The generator, driven at a constant speed, provides the field voltage for the motor. The motor has an inertia Jm and bearing friction bm. Obtain the transfer function e The generator voltage vg can be vf(s) assumed to be proportional to the field current iş.