nal Assessment Nerc Exam 100% Correct Answers

Final Assessment Nerc Exam 100% Correct Answers 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% - Correct Answer 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 - Correct Answer C. Geothermal generators Which type of solar technology converts electromagnetic energy in sunlight directly into direct current? A. Concentrating solar thermal B. Solar DC inverter C. Photovoltaic D. Solar batteries - Correct Answer C. Photovoltaic If a reliability coordinator identifies that there is a potential transmission related problem in the area, who should they notify? A. Marketers in the area B. Other reliability coordinators in the interconnection C. All purchasing selling entities D. Generation operators in the area of the potential problem - Correct Answer B. Other reliability coordinators in the interconnection Restoration services on critical telecommunications channels should be available _____. A. 24 hours per day B. Within 12 hours of a telecommunication channel failure C. By the end of the next business day D. Within 72 hours of the contingency occurring - Correct Answer A. 24 hours per day According to NERC, A balancing authority may elect to fulfill its contingency reserve obligations by participating as a member of a _____ A. ISO B. Reserve sharing group C. RTO D. Regional reliability organization - Correct Answer B. Reserve sharing group If you were to experience the northern lights what would be your concern with the operation of the power system? A. System harmonics causing oscillations B. A reduction of MVAR consumption C. Generator output reduction D. Transformer overheating - Correct Answer D. Transformer overheating Your BA has a net scheduled interchange of 650 MW and your actual interchange is 800 MW. The frequency bias setting for your BA is 65 MW/0.1 Hz. There is a disturbance on the system and the actual frequency is 60.02 Hz. What is your ACE? A. -163 MW B. -137 MW C. 137 MW D. 163 MW - Correct Answer D. 163 MW Which of the following complies with the control performance 1 standard? A. CPS = 95% B. CPS = 125% C. CPS = 90% D. CPS = 80% - Correct Answer B. CPS = 125% Generators have the ability to be used as voltage control devices. If a generator raises its VAR output the system operator should expect the system voltage to A. Decrease B. Increase C. Not change D. Collapse - Correct Answer B. Increase if a BA has 500 MW of spinning reserves and of that 300 are regulating reserves, by definition, NERC requires the regulating reserves must be ____? A. Online and AGC responsive B. Able to ramp to full load within 10 minutes C. Able to be online within 10 minutes D. Able to be online within 5 minutes - Correct Answer A. Online and AGC responsive There is a shunt capacitor on your system that has a rating of 50 MVAR @ 138 KV. The voltage at the time of switching the capacitor in service is 124 KV. What would be the expected output of the capacitor? A. 45 MVAR B. 43.5 MVAR C. 50 MVAR D. 40.5 MVAR - Correct Answer D. 40.5 MVAR Which mode of AGC operation is the one that NERC states will be used unless such operation is adverse to the system or interconnection Reliability? A. Constant interchange B. Tie-line Bias C. Constant frequency D. Load-frequency bias - Correct Answer B. Tie-line Bias You have a 600 MW unit that is currently loaded at 300 MW and frequency drops .2 Hz. What will the new output of the generator be as a result of the drop in frequency due to droop characteristic? A. 300 MW B. 340 MW C. 260 MW D. 380 MW - Correct Answer B. 340 MW If a BA is unable to calculate its ACE for more than ____ it shall notify its RC. A. 15 minutes B. 60 minutes C. 30 minutes D. 20 minutes - Correct Answer C. 30 minutes The system frequency is currently 60.03 Hz. The Synchronized generating capacity is 3200 MW. The system load is currently 2200 MW. What is the maximum amount of load block that should be restored? A. 160 MW B. 220 MW C. 110 MW D. 320 MW - Correct Answer A. 160 MW A balancing authority has a bias setting of -150 MW. The frequency falls .05 Hz due to an external disturbance. How many MW would you expect this balancing authority area to provide to the disturbance? A. +150 MW B. +75 MW C. -150 MW D. -75 MW - Correct Answer B. +75 MW When a RC must curtail or hold an interchange transaction to respect transmission service reservation priorities or to mitigate potential or actual SOL violation, the RC shall inform the _____ listed on the interchange transaction tag of the greatest reliable level at which the affected interchange transaction may flow. A. Transmission service provider B. Transmission operator C. Source balancing authority D. Sink balancing authority - Correct Answer D. Sink balancing authority Each generator operator shall provide generator outage information daily for scheduled generator outages planned for the next day. Why is this important? A. So the RC & TOP can do their studies B. So marketing knows how much gas to buy C. So the BA knows how much power to buy D. So the plant can determine staffing requirements - Correct Answer A. So the RC & TOP can do their studies You are a TOP and you have changed relay settings for your UVLS scheme in the northern part of your system. Your neighbor just to the north of you has a major generating facility rated @ 1000 MW and they supply most of the MVAR for the area. They also monitor the MVAR flows on most of the lines in the area due to an NRC requirement regarding MVAR for a nuclear plant. Of the parties listed below, who does not need to be notified of the changes made to the relay settings A. Transmission service providers B. Balancing authorities C. Transmission operators D. Generation operators - Correct Answer A. Transmission service providers Areas of North America with igneous rock formations would be subject to which of the following due to the igneous rock formations? A. Earthquakes B. High customer load C. Impacts of GMD activity D. Earthquake aftershocks - Correct Answer C. Impacts of GMD activity If you use a dynamic schedule that is less than or equal to 250 MW, how much does the average energy profile have to vary by in order to have to submit a new or modified tag? A. 25 MW B. 25% C. 10% D. 10 MW - Correct Answer A. 25 MW The data scan rate for the ACE calculation has to occur at least every ____ A. Four seconds B. 10 seconds C. 15 seconds D. Six seconds - Correct Answer D. Six seconds The MSSC for your BA area is 850 MW. A defined disturbance for DCS reporting would be equal to how many MW's? A. 680 B. 725 C. 600 D. 805 - Correct Answer A. 680 According to NERC, which of the following shall shed customer load rather than risk an uncontrolled failure of components or cascading outages of the interconnection after all other remedial steps have been taken? A. Transmission operator or balancing authority B. Transmission operator or load serving entity C. Transmission owner or balancing authority D. Balancing authority or load serving entity - Correct Answer A. Transmission operator or balancing authority The transmission owner and distribution provider that owns a UVLS system shall have equipment maintenance and testing programs in place. This program shall include which of the following? 1. Relays 2 instrument transformers 3 grounds 4 batteries A. 2,3,&4 B. 1,3,&4 C. 1,2,&3 D. 1,2,&4 - Correct Answer D. 1,2,&4 Transmission operator A has a step up transformer that has a rating of 1000 MVA at a generating facility. The unit is operating at full load and it is a peak day. Transmission operator A gets an alarm from a step up transformer and sees that it is loaded to 105% of its rated capacity. Transmission operator A has how long to return the transformer to the rated capacity? A. 30 minutes B. 20 minutes C. 60 minutes D. 15 minutes - Correct Answer A. 30 minutes Who is responsible to know the status of all transmission reactive power resources, including the status of voltage regulators and power system stabilizers? A. Transmission owner B. Transmission operator C. Transmission service provider D. Reliability authority - Correct Answer B. Transmission operator Between the times of 0930 and 0940 the system is operating normally. The average for the ACE is 33 MW. The BA L10 is 29.5 MW. Which of the following NERC performance standards was in violation? A. BAAL B. DCS C. CPS1 D. CPS2 - Correct Answer D. CPS2 What is the IEEE number for a differential relay? A. 25 B. 50 C. 21 D. 87 - Correct Answer D. 87 Who is responsible to initiate the confirmation process for interchange schedules? A Balancing Authority B. Generation providing entity C. Transmission service provider D. Purchasing selling entity - Correct Answer A. Balancing authority A 10% reduction in voltage results in the effective value of a capacitor being A. Reduced by more than 10% B. Increased by 10% C. Reduced 10%