2 The motion of an oscillating flywheel is defined by the relation θ = θ0e–3πt cos 4πt, where θ is expressed in radians and t in seconds. Knowing that θ0 = 0.5 rad, determine the angular coordinate, the angular velocity, and the angular acceleration of the flywheel when (a) t = 0, (b) t = 0.125 s

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented