Afour-pole induction motor be accomplished by using an electronic converter to converta 400-v drives a load at 2534 rpm. this is to de source into a set of three-phase ac voltages. if the do-to-ac converter has a power efficiency of 95 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the dc source express your answer to three significant figures and include the appropriate units.

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.