What is the reactance of a 100 ?H inductor operating at 100 kHz?
A) 62.8 k? B) 6.28 ? C) 62.8 ? D) infinite ?
C
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Name one material commonly used for prefabricated bridges.
What will be an ideal response?
Within a colony of bees, there are three basic types of bees: the ____________________, drones, and workers
Fill in the blank(s) with correct word
Stairs provide easy access between the floors of a building; one type, ____, have one 90-degree turn between elevations and the two sides pf the L are connected by a landing.
A. straight stairs B. L-shaped stairs C. double-L stairs D. U-shaped stairs
Determine the transfer functions from input voltage to angular velocity and from load torque to angular velocity for a PM DC motor rigidly connected to an inertial load. Assume resistance and inductance parameters Ra , La let the armature constant be ka . Assume ideal energy conversion, so that ka = kT . The motor has inertia Jm and damping coefficient bm, and it is rigidly connected to an inertial load with inertia J and damping coefficient b. The load torque TL acts on the load to oppose the magnetic torque.
Find: Transfer functions from armature voltage to angular velocity and from load torque to angular velocity. Schematics, diagrams, circuits and given data.