Reactive power - Study guides, Class notes & Summaries

Z-51 Written Exam Questions and Complete Solutions In a steam turbine, what is the function of a Kingsbury thrust bearing? A) Maintain first stage steam pressure. B) Compensate for coupling misalignment. C) Adjust shaft torque at start up. D) Maintain axial positioning of the rotor shaft. - Answer: D) Maintain axial positioning of the rotor shaft. The ratio of actual pressure of water pressure in the atmosphere to the saturated pressure of given temperature is A) partial pressure....

A transmission line is operating with a voltage phase angle different of 30 degrees between the sending Vs and the receiving bus Vr. If the receiving end load is suddenly increased, the voltage phase angle difference will be? CORRECT ANSWER The phase angle will increase. When load is increased phase angle will increase. A load has a power factor of 0.9 lagging. If the load draws 100 MVA, what is the MW draw? CORRECT ANSWER 90 pf= mw/mva The high side of a delta-wye connection transformer i...

NERC RANDOM Questions AND ANSWERS| 100% CORRECT When current in an AC circuit is doubled, power losses in the circuit will respond in which way? a) half as much b) does not change c) doubles d) four times greater Answer-d) four times greater What determines the size of insulators used on power lines? a) Current flow on the line b) Voltage level of the line c) Reactance of the line d) Operating Limit of the line Answer-b) Voltage level of the line Reactive power is needed to ...

Actions in low voltage alert? : Review transmission & generation outages Request reactive reserve check Heavy load voltage schedule warning purpose is to have members prepare far max support of voltages on the? : Bulk Power System Manual load dump warning & reduction of Non-critical plant load issued when? : Primary reserve is less the the largest generating unit. Loss of transmission facility jeopardize reliability after all possible measures have been taken to increase reserves Hot...

TCI Seventh Edition Latest Update with Verified Solutions The TCI System helps Organizations Prevent Crises. De-escalate potential crises, Manage acute Physical behavior, Reduce potential and actual injury to children and staff, Teach children adaptive coping skills, Develop a learning organization. Developmental Relationships are characterized by attachment, reciprocity, progressive complexity, and balance of power. Theory of Change Identifies roles and tasks as well as desired p...

ISA Utility Specialist (Chapters 1-7) UPDATED Exam Questions and CORRECT Answers In the U.S., enforcement of safety work rules resides with: - CORRECT ANSWEROccupational Safety & Health Administration (OSHA) Utility pruning is the pruning of trees located in the vicinity of power lines for the purpose of __________ __________ __________. - CORRECT ANSWER- ensuring reliable service A comprehensive vegetation management program should be __________ rather than reactive, & based on prin...

Practice Test NERC Questions And Answers 2024 A transmission line is operating with a voltage phase angle different of 30 degrees between the sending Vs and the receiving bus Vr. If the receiving end load is suddenly increased, the voltage phase angle difference will be? - ANSWER-The phase angle will increase. When load is increased phase angle will increase. A load has a power factor of 0.9 lagging. If the load draws 100 MVA, what is the MW draw? - ANSWER- 90 pf= mw/mva The high side ...

DEOMI Grp 2 Exam 2 Questions with All Correct Answers Describe how power affects prejudice and discrimination - Answer- Power is at the core of discrimination---w/out power; discrimination is ineffective; with power discrimination maintains the dominance of one grp over the other Define Victim - Answer- --in the broad sense as persons who, individually/collectively, have suffered harm Define victim focus - Answer- --victim focus is reactive problem-solving approach, narrowly defines prob...

PJM Exam Questions and Answers 100% Correct During reactive testing, which entity must give approval to change an approved voltage schedule? PJM, TOP, MOC, GO - Correct Answer ️️ -TO Generation available within 10 minutes for offline reserve units: Quick-start (hydro), manual, operating, supplemental - Correct Answer ️️ -Quick-start (hydro) Minimum MVARs for an individual generator that is required to do reactive testing? - Correct Answer ️️ -20 MVA Minimum MVARs for an aggr...

Epri Practice test with 100% correct Answers If a generator is producing 500 MW and 200 Mvar, is the generator? A. Leading B. Lagging C. Underexcited D. Dropping - answerB. Lagging What is the IEEE device number for a differential relay? A. 87 B. 86 C. 67 D. 50 - answerA. 87 Can a synchronous machine have a negative torque angle? What does this mean? A. Yes / the machine is absorbing reactive power B. No / the machine is absorbing active power C. No / the machine is absorbing rea...