High frequency generators - Study guides, Class notes & Summaries

When using a dynamic schedule and the energy profile in an hour is >250 MW and the actual hourly integration deviates from the hourly energy profile by ____ the tag must be modified. A. 100 MW B. 10% C. 50 MW D. 25% B. 10% Dry steam plants, flash steam plants, and binary cycle power plants are the three main types of what kind of generating plant? A. Nuclear generators B. Combustion turbine generators C. Geothermal generators D. Hydroelectric generators C. Geothermal generators...

NERC Transmission Practice Test, Exam Q&As, A+ Guide-Station #1 is at 539KV and station #2 is at 534 KV. Which direction will the MVAR typically flow? A. From station #1 to station #2 B. From station #2 to station #1 C. Downhill based on power angle D. Uphill based on power angle - A. From station #1 to station #2 Each transmission operator shall arrange for supply of _____ resources within its boundaries to protect the voltage levels under contingency conditions A. Transmission B. Gene...

Practice Test ASRT CT Questions with Correct Answers Rated A The z-axis refers to the ______ plane. a) coronal b) axial c) sagittal d) transverse - Correct Answer axial Generators are often times located within the gantry. These types of generators are typically: a) full wave/three-phase. b) medium frequency. c) high frequency. d) multiwave/two-phase. - Correct Answer high frequency Modern CT scanners rely on ____ to process acquired data. - Correct Answer minicomputers...

PJM Generation Operation Exam 2024 with Verified Solutions Control center facilities must have a minimum of how many days of fuel for the backup generator? 5 days If PJM ACE shows overgeneration, actual imports are: Less than scheduled Who should a generator contact at PJM to clear an outage ticket? Master Coordinator To correct for a slow or fast clock, system frequency schedules are offset by: +/-.02 Hz What frequency would PJM set to correct for fast-time error? 59.98Hz ...

PJM Flash Card Transmission Questions and Answers Already Passed What would be an appropriate action for a transmission system operator to implement during a PJM issued cold weather alert? Man all combustion turbines Man all transmission facilities Defer or cancel facility maintenance and testing Open all SF6 circuit breakers Defer or cancel facility maintenance and testing During restoration situations, dynamic reserve generator load pick-up factors are defined as which of the f...

How many alterations in the direction of the current flow occur in 0.10 seconds in a 60 Hz AC current Correct Answer 12 (60Hz= 120 pulse/sec; .10 x 120 = 12) The _______ is the source of radiation in the x-ray tube Correct Answer Actual focal spot High frequency generators Correct Answer 1) use inventors to increase pulse frequency 2) produce similar outputs to three-phase with a single phase source 3) achieve peak kvp faster than single or three-phase generators Where is the stator o...

Control center facilities must have a minimum of how many days of fuel for the backup generator? : 5 days If PJM ACE shows overgeneration, actual imports are: : Less than scheduled Who should a generator contact at PJM to clear an outage ticket? : Master Coordinator To correct for a slow or fast clock, system frequency schedules are offset by: : +/-.02 Hz What frequency would PJM set to correct for fast-time error? : 59.98Hz What frequency would PJM set to correct for slow-time error...

how many alterations in the direction of the current flow occur in 0.10 seconds in a 60 Hz AC current - Answer-12 (60Hz= 120 pulse/sec; .10 x 120 = 12) the _______ is the source of radiation in the x-ray tube - Answer-Actual focal spot High frequency generators - Answer-1) use inventors to increase pulse frequency 2) produce similar outputs to three-phase with a single phase source 3) achieve peak kVp faster than single or three-phase generators where is the stator of the anode induct...

EPRI Chapter Test Questions with Verified Solutions If a generator is producing 500MW and 200Mvar, the generator is: Lagging 87 Is the IEEE device number for a differential relay. Can a Synchronous machine have a negative torque angle? What doies this mean? Yes, the machine is absorbing active power. A customer load is fed at 12o Volts. The customer's voltage is doubled while the load magnitude stays the same. What effect does this have on the power losses? Decreases the losses by a factor o...

Short questions and answers EE1251 Electrical Machines II 1. Why almost all large size Synchronous machines are constructed with rotating field system type? The following are the principal advantages of the rotating field system type construction of Synchronous machines: • The relatively small amount of power, about 2%, required for field system via slip-rings and brushes. • For the same air gap dimensions, which is normally decided by the kVA rating, more space is availabl...