A single-phase ac voltage of 240 V is applied to a series circuit whose impedance is 10 60degree ohm ft. Find R, X, P, Q and the power factor of the circuit. lf a capacitor is connected in parallel with the circuit of Prob. 1.4, and if this capacitor supplies 1250 var, find the P and Q supplied by the 240-V source, and find the resultant power factor.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.