The rotor of a gas turbine is rotating at a speed of 6900 rpm when the turbine is shut down. It is observed that 208 s is required for the rotor to coast to rest. Which of the following is the angular acceleration of the rotor assuming uniformly accelerated motion? * O -3.01 rad/s2 O -3.47 rad/s2 O -16.56 rad/s2 -28.75 rad/s2

The rotor of a gas turbine is rotating at a speed of 6900 rpm when the turbine is shut down. It is observed that 208 s is required for the rotor to coast to rest. Which of the following is the angular acceleration of the rotor assuming uniformly accelerated motion? * O -3.01 rad/s2 O -3.47 rad/s2 O -16.56 rad/s2 -28.75 rad/s2

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A shaft rotating with 19 rev/s is uniformly accelerated at 0.4 rad/s? for 6 seconds. It then rotates with a uniform speed for next 9 s. Then it is made to stop in next 15 s. Determine (i)maximum angular velocity; (ii) total angular displacement Solution: The maximum velocty in rad/s is The total displacement in rad is
For the diagram below the angular velocity of the wheel is w = 2rad/s. The location of the instantaneous center of zero velocity is at point 0.3 m OD 1.2 m OB 45% O somewhere not listed in the other options. OC 0.3 m C
The piston in a piston and crank mechanism has the velocity and acceleration shown below. Using relative motion analysis, determine the current angular velocity and angular acceleration for the crank. rad v=2 m/s a = 5 m/s² 150 mm rad $2 400 mm (Solution: w = 13.33 clockwise, a = 100.16 clockwise)
Need the answer in 15 minutes, please. Crank AB is 0.500 m long and is rotating counterclockwise at 3.00 rad/s. Rod BD is 1.500 m long. If crank AB is rotating at a constant angular velocity, which body/bodies is/are in general plane motion? Piston D Rod BD Crank AB & Rod BD Crank AB Which of the following gives the closest value of the speed of end B of crank AB? 3 m/s 4.5 m/s 1.5 m/s 3 rad/s
follower cam R. 15 , If For the nm echanism shownn, R 0.45 m, 0= 10 and o 50 rad/s and angular the cam rotates with angular velocity of acceleration of-20 rad/s at this instant what is the relative acceleration (m/s-) between the face of the follower and the profile of the CAM? Select one Oa.-1211 -991 Oc-880.9
8. The constant angular acceleration of the rotating disk is 12 rad/s2. The angular velocity of the disk is 24 rad/s clockwise when t = 0. Determine the total angle turned by the disk between t = 0 and t = 4sec. ANS: 48 rad 9. The angular acceleration ?, rad/s^2 of a rotating disk is related to its angular velocity ?, rad/s by ? = 4 √?. When t = 0, the disk is at rest and the angular position coordinate of a line in the disk is θ = 8rad. Find the expression for θ(?). ANS: θ(?) = 0.1667 ?^1.5 + 8 10. The rotation of a wheel is defined by the relation, θ = 3t^3 – 5t^2 + 7t – 2 where θ is in radian and t in seconds. Find the angular acceleration when t = 3 seconds. ANS: 44 rad/s^2 12. The shaft of a motor turns at constant speed of 3000 rpm. It turns to how many radians in 40 seconds. ANS: 12566.37 rad 13. The motor driving a grindstone is switched off when the latter has a rotational speed of 240 rpm. After 10sec, the speed is 180 rpm. If the angular retardation remains constant, how…
Q1: 1.2. if gear A is started from rest with 6.366 rev/sec² along c.w. direction, find the angular velocity and acceleration of gear B after 5 sec. 1.2. The c.w. angular acceleration of gear A is α = (3 +0.007 02), where 0 in radians. If the c.w. angular velocity of gear A was 250 rev/min at time t = 0, find the angular velocity and acceleration of gear B after the gear A rotating 16 rev. 175 mm 100 mm WA αA
A turbine blade rotates with angular velocity w(t) = 3.1 rad -2.7 rad +2. What is the angular acceleration of the blade at t = 8.0 s? S 83
A wheel rotating with 16 rev/s is uniformly accelerated at 0.4 rad/s2 for 10 seconds. It then rotates with a uniform speed for next 9 s. Then it is made to stop in next 15 s. Determine (i)maximum angular velocity; (ii) total angular displacement The velocity of the wheel at 10 seconds in rad/s is ? The angular displacement for the first case in rad is? The angular displacement for the second case in rad is? The maximum velocty in rad/s is? The angular displacement for the last case in rad is? The total angular displacement in rad is?
A child is playing with a tyre of radius 0.5m. She accelerates it from 5 rpm* to 25 rpm in a time of 15 s. The linear acceleration of the tyre is ( rpm = rev per minute) 70 т. s 2 S O 0.7 m. s-2 m. s-² O .07m. s-2
3. The 40.64 cm. diameter pulley of a gasoline engine is connected by a belt (which is assumed not to slip) to the pulley of the pump. The belt speed is 1200 m. / min. Determine (1) the angular speed of the engine pulley in RPM and in rad / sec. and the diameter in cm. of the pump pulley if the pump speed is one-half the speed of the engine pulley.
Mechanical Engineering A turbine is running at rated power of 5 MW with the low speed shaft spinning at 12 RPM, with a wind speed of 10 m/s. The drive train has a polar moment of intertia of 50 million kg-m2. The wind suddenly increases in speed to 12 m/s for a 10 second period. What will be the speed of the rotor after that 10 second period, if no control changes are made to the turbine (i.e power delivered to the grid continues at 5MW, and no change in blade pitch angle, no change in Cp, etc.).