Question

Dhase abc sequence is the same as a. An acb sequence b. A bco sequence C. A cba sequence d. None of the above 25. Which of the following conditions is not a requirement for a balanced three-phase swystem? a. The magnitudes of the source voltages are equal b. The current phasors sum to zero at each time instant c. The voltage magnitudes sum to zero at each time Instant d. The source voltages are 120 degrees out of phase with each other e. The load impedances are equal 26. A transformer has: a. Two terminals b. Three terminals c. Four terminals d. Five or more terminals 27. A bandpass filter: b. Removes high frequencies c. Neither (a) nor (b) d. Both (a) and (b) 28. A passive filter a. Includes only RL, and Ccomponents b. Is always stable c. Can be desien for either low pan. band-pass. or tig All of the above d. None of the abowe e. 29. The initial value theorem is used to Calculate the initial comditions of a circt b. Calculate the starting point of a comvelution innrg a. c. Calculate the initial value of an impudse respone Calculate the initial value of a transter funcion d. 30. A transfer function . Applies only to passive systems . Is stable only if all poles are in the right comoples lane d. a. Applies only to linear systems Is used to analyze initial conditions

Answer 1

Transformer has rightarrow 4 terminals A bond Pass Filter means (d) Both (a) & (b) removes low & high frequencies (d) All of these Passive means rightarrow R, L, C it's always stable we can built low, high, band pass (d) initial value of a transfer function Applies only to linear systems