An over excited alternator is operating at a lagging

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11) An over-excited alternator is operating at a)Lagging power factorb)Unity power factorc)Leading power factord)None of the above 12) An over-excited alternator is operating at 13) A 3-phase capacitor rated at 240 V and 110 kvar has been proposed for correcting the power factor of a 3-phase induction motor operating at 280 v . the reactive power (kvar) that will be provided by the capacitor ismost nearly 14) A room with a floor area of 50ft × 30ft and a ceiling height of 10 ft has luminaires suspended 2ft from theceiling assuming a working plane of 30 in. And a required illumination level of 50 fc, the net luminous flux(lumens) using fixtures with a coefficient of utilization of 0.78 is most nearly. 15) The room amplifier in a wireless system amplifies a)The baseband signalb)The modulated signal onlyc)The encoded and modulated signald)The recieved signal 16) Which of the following regression models is not considered to be a linear regression model for predicting Yin terms of X?
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17) The activity on node network shown below describes a project consisting of 8 tasks A-H. Each node indicates duration in weeks relationship are finish-to-start. The minimum time to complete the project is 18) A basic time-domain reflectometry (TDR) system is used with an oscilloscope to display the waveform at theinput end of a line driven by an alternating 0-1 square waveform signal in a non-return-to-zero (NRZ) digitalsystem.A 1000-m cable is terminated witha short circit at the far end. The first reflected wave appears 9.43 µs after the incident waveform. The actual velocity in the cable divided by the speed of light is Vp =2L/TO
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  • Fall '19
  • Electric motor, Power factor, RTI, Petroleum Engineer

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