A linear transformer couples a load consisting of a 360 O resistor in series with a 0.25 H
inductor to a sinusoidal voltage source, as
shown. The voltage source has an internal
impedance of 184 + /0 Cl and a maximum voltage of 245.20 V, and it is operating at 800 rad/s.
The transformer parameters are Ri = 100 fl,
Lt
= 0.5 H, R2 = 40 O, L2 = 0.125 H, and
k = 0.4. Calculate (a) the reflected impedance;
(b) the primary current; and (c) the secondary
current.

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.