The shaft of an electric motor accelerates from134 rpm to 1,473 rpm in 8 seconds Calculate...
Question 13 5 pts An electric motor delivers 67-HP mechanical power when its shaft turns at 2,832 RPM. What is the shaft torque in N.m? 1 HP = 746 W. Question 14 5 pts Copy of A DC motor supplied from 48 V draws 5 amps and turns at 157 rad/sec when the load torque is 1.45 N.m. What is the efficiency in percent?
A simply suported steel shaft in Fig. below is connected to an electric motor with a flexible coupling. Find the value of the critical speed of rotation for the shaft. (Use the equation for the shaft alone, on page 380 in the textbook) (E = 30x10 psi, y = 0.282 lbf/in) Flexible coupling Motor 0.25-in.-dia. shaft 20 in. The critical speed of rotation for the shaft is rpm.
A 0.8 m diameter wheel accelerates uniformly from 100 rpm to 160 rpm im 10 seconds. determind (a) angular acceleration (b) the number of turns it rotates in this time (c) the angular velocity of the wheel 2.0 seconds after it has started accelerating (d) the centripetal acceleration at this moment A 0.8-m-diameter wheel accelerates uniformly from 100 rpm to 160 rpm in 10 seconds. Determine (a) its angular acceleration, (b) the number of turns it rotates in this time,...
A phonograph record accelerates from rest to 34.0 rpm in 5.53 s. (a) What is its angular acceleration in rad/s2? rad/s2 (b) How many revolutions does it go through in the process? rev
An ultracentrifuge accelerates from rest to 100,000 rpm in 2.00 min. (a) What is its angular acceleration in rad/s2, rad/s2 (b) What is the tangential acceleration (in m/s2) of a point 9.00 cm from the axis of rotation? m/s2 (c) What is the radial acceleration in m/s2 and multiples of g of this point at full rpm? a in m/s m/s2 a as a multiple of g 9
An ultracentrifuge accelerates from rest to 100,000 rpm in 1.80 min. (a) What is its angular acceleration in rad/s2? rad/s² (b) What is the tangential acceleration, in m/s, of a point 10.55 cm from the axis of rotation? O m/s2 (c) What is the radial acceleration, in m/s2, of this point at full rpm? m/s2 (d) Express this radial acceleration as a multiple of g.
A single V-belt drive system is powered by an electric motor with a speed of 2691 rpm and transmits a power 11 kW. The driving pulley is connected to the driven pulley by a single V-belt of angle 18 degrees and a unit weight of 2.18 N/m. The angle of wraps between the belt and pulley is approximately 175 degrees. The driven shaft is attached to a cylindrical pulley of 101 mm and runs at a speed of 1221 rpm....
The shaft of an elevator motor turns clockwise at 180 rpm for 10 s, then turns counter-clockwise at 240 rpm for 5s. What is the angular displacement of the shaft during this motion? answer in radians please!
An ultracentrifuge accelerates from rest to 90900 rpm in 1.95 min. Randomized Variablesf = 90900 rpm t = 1.95 min l = 9.1 cm Part (a) What is its angular acceleration in rad/s2? Part (b) What is the tangential acceleration of a point 9.1 cm from the axis of rotation in m/s2? Part (c) What is the centripetal acceleration in multiples of g of this point at full speed? We were unable to transcribe this imageWe were unable to transcribe...
At t=0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by θ(t)=( 244 rad/s )t−( 20.1 rad/ s 2 ) t 2 −( 1.46 rad/ s 3 ) t 3 . Part A At what time is the angular velocity of the motor shaft zero? Part B Calculate the angular acceleration at the instant that the motor shaft has zero angular velocity. Part C How many revolutions does the...