57.Calculate the speed ratio of the wind turbine which has (36m) diameter and rotates 120 revolution per minute, if you knowthat tip speed of the rotor blades twice time more than the windspeed.

Given: The diameter of wind turbine d=36 m The speed of turbine v=120 rpm Assume the tip speed of…

Answered: 57. Calculate the speed ratio of the…

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

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The mass of a propeller is 4.5 tons and its centre of gravity is 3.5 mm from the centre of rotation. Find the pull due to centrifugal force when it is rotating at 120 rev/mm
Plz do as fast as possible ....!
The figure shows a right-angled construction frame ABC. When measured at rest, it has dimensions as follows: AB = 18.9 m, AC = 10.0 m, and BC = 16.0 m. This frame is now given a new velocity of 0.420 c, relative to Earth, in a direction parallel to AC. How long is part BC of this frame with the new velocity as measured by Earth-based engineers?
Consider a helicopter flying in a straight path at a speed of 52 m/s. The the rotor diameter is 10 m and the rotors are moving at 264 RPM (revolutions per minute). What is the maximum rotor tip speed (in m/s). Hint: Note that the rotor will sometime be moving in the direction of the flight path and at other times opposite to the flight path or at an angle to the flight path. The maximum rotor tip speed is generated when the rotor is moving in the direction of the flight path.
The mass of a propeller is 4.5 tons and its centre of gravity is 3.5 mm from the centre of rotation. Find the pull due to centrifugal force when it is rotating at 120 rev/min.

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57. Calculate the speed ratio of the wind turbine which has (36 m) diameter and rotates 120 revolution per minute, if you know that tip speed of the rotor blades twice time more than the wind speed.