Virtual Labs

a: the centre of two balls mass b: the centre of balls mass to the point of intersection of upper arms c: the centre of balls mass to the point of intersection of lower links d: the point of intersection of upper arms to the point of intersection of lower links

What is the theoretical correlation between speed and height of the governor?

a: N²∝1/h b: N∝1/h c: N³∝1/h d: h∝N

The arms of proell governor are 300 mm long. The pivots of upper and lower arm are 30 mm from the axis. The load on the sleeve is 250N and weight of each ball is 30N. When the governor sleeve is at mid position the extension link of the lower arm is vertical and radius of rotation of the balls is 160 mm. The vertical height of governor is 200 mm. If speed of governor at mid-position is 150 rpm, find the length of extension link.

a: 502mm b: 232mm c: 270mm d: 320mm

From the simulator, at 128 rpm what is the approximate height of the governor

a: 120mm b: 160mm c: 200mm d: 240mm

Identify these parts of the proell governor

a: Fly ball, Link, top sleeve b: Central load, bottom sleeve, top sleeve c: Central load, bottom sleeve, top sleeve d: Fly ball, Link, bottom sleeve

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