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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 answers 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 answers 90 pf= mw/mva The high side of a delta-wye connection transformer...

Accelerating Power correct answers In a GENERATOR, the difference between the MECHANICAL INPUT POWER and the electrical output POWER (assuming no LOSSES). For a GENERATOR's TORQUE ANGLE to change, the GENERATOR must have accelerating POWER. Accumulated Inadvertent correct answers The accumulation over time of INADVERTENT ENERGY. The accumulated inadvertent account of a BALANCING AUTHORITY represents the amount of excess ENERGY a BALANCING AUTHORITY has either supplied to the INTERCONNECTION ...

A Balancing Authority notices that Operating Reserve has steadily declined throughout the hour. What is the most likely cause? a) Loss of a large generator in the area b) An inaccurate load forecast c) Loss of a major transmission line d) A malfunction of EMS correct answers b) An inaccurate load forecast Balancing Area A notices that the Interconnection frequency is 59.94 Hz and their ACE is 0. Which of the following could be the cause of this reading? a) A net under-generation in B...

EDE correct answers Energy Deficient Entity Ime correct answers meter error DCS correct answers Disturbance Control Standard DFRs correct answers Digital Fault Recorder LOFT correct answers Linear on the fly testing SCADA correct answers Supervisory Control and Data Acquisition EMS correct answers Emergency Management System SPS correct answers Special Protection Systems ACE correct answers Area Control Error Fs correct answers frequency Schedule RCIS correct answer...

BAL-001-0.1a correct answers Real Power Balancing Control Performance BAL-STD-002-0 correct answers Operating Reserves (WECC) BAL-003-0.1b correct answers Frequency Response and Bias BAL-004-0 correct answers Time Error Correction BAL-004-WECC-01 correct answers Automatic Time Error Correction BAL-005-0.1b correct answers Automatic Generation Control BAL-006-2 correct answers Inadvertent Interchange COM-001-1.1 correct answers Telecommunications COM-002-2 correct answers ...

What is the purpose of EOP-005? correct answers Assure reliability is maintained during system restoration. What is a Black Start Resource (BSR)? correct answers A Generating Unit(s) & Its Associated Set Of Equipment Which Has The Ability To Be Started Without Support From The System Or Is Designed To Remain Energized Without Connection To The Remainder Of The System Who must approve the Restoration Plan that every TOP must develop? correct answers The RC To what point is the restoratio...

System studies identify what correct answers Predict operations and identify constraints If ACE remains the same and frequency goes up what has happened? correct answers Someone lost load When a generator has its AVR in service it is a? correct answers Dynamic source of reactive power Black start resource testing is done every? correct answers 3 years Each BA shall operate its AGC on? correct answers Tie line Frequency Bias When is voltage reduction reportable? correct answers Gre...

You are an external BA with a frequency bais of 20 MW/.1 Hz that sees a frequency of 60.02 due to a large loss of load in the contingent BA. If your generator governor control systems responded to the frequency deviation approximately how much of a generation change would you BA experience? correct answers -4MW Net actual interchange minus Net scheduled interchange is what? correct answers Inadvertent interchange Suppose your interconnection operators at 59.97 Hz from one minute after midn...

A CPS1 violation is an indication that : A BA's ACE is hindering frequency . A BAS ACE is helping frequency A BA's Frequency Bias is set too high . A BA is not meeting its L10 . correct answers A BA's ACE is hindering frequency . A Balancing Authority has a normal generation capacity of approximately 9400 MW and its most severe single contingency is an 800 MW coal fired steam unit . At 1430 , with an ACE value of 20 MW , a 600 - MW generator trips off line as the result of ...

What is the purpose in accounting for Inadvertent Interchange among the Balancing Authorities? correct answers To ensure that Balancing Authorities do not excessively depend on other Balancing Authority Areas for meeting their demand or Interchange obligations. In your Interconnection, a generator tripped that was large enough to reduce the frequency from 60.00 Hz to 59.94 Hz. Your Balancing Authority's Frequency Bias is 200 MW/0.1 Hz. How many MW would your system initially contribute to fr...

NATE Final Exam # 1 (CORRECTLY SOLVED) NATE Exam: AC & HP (A+ Graded answers) NATE AC Service Certification (Already Passed!) HVAC NATE Heat Pump (Questions with 100% correct solutions) NATE Exam: Air Conditioning and Heat Pumps (with 100% correct answers)

Generally, vibration eliminators in piping should be installed: A: At a 45 degree angle B: At a 90 degree angle C: Perpendicular to the compressor crankshaft D: Parallel to the compressor crankshaft correct answers D: Parallel to the compressor crankshaft If you purchased ten filter-driers for $100.00, what was the price of each filter-drier? A: $100.00 B: $10.00 C: $1.00 D: $1.10 correct answers B: $10.00 Which of the following jobs requires safety glasse...

What are the five basic components to any schematic? correct answers 1. A power supply 2. A path for the power 3. A load or component that operates from the power. 4. A switch or component that interrupts the power to the load. 5. A legend or key that explains what the various symbols and abbreviations used in the schematic mean. What are the three basic types of wiring diagrams used in the HVACR trade? correct answers 1. The ladder diagram 2. The pictorial diagram 3. The installation d...

A system is supplied from the factory with charge of 5 pounds 10 ounces for a 15 foot line set. The line set is 25 feet long. The manufacturer's instruction sheet specifies 0.6 ounces of refrigeration to be added for each added foot of refrigerant line set length. What is the total refrigerant charge for the system? A. 6 ounces B. 5 pounds C. 5 pounds 10 ounces D. 6 pounds correct answers D. 6 pounds 15ft - 25ft = 10ft x .6 = 6 ounces 5 pounds + 10 ounces + 6 ounces 5 pounds + 16 ou...

a (Centrifugal) correct answers Which of the following compressors are considered a dynamic compressor? a. Centrifugal b. Reciprocating d. Rotary c. Scroll b (Superheated vapor / sub cooled liquid) correct answers What is the condition of the refrigerant as it enters and leaves the condensing coil of a typical light commercial HVAC system? a. Vapor / liquid b. Superheated vapor / sub cooled liquid c. Saturated vapor / saturated liquid d. Hot gas / cool liquid b (Thermal expansi...

Since 1992, the United States Department of Energy has required that all furnaces sold and installed from that date on must have an AFUE of no less than: A: 70% B: 75% C: 78% D: 80% correct answers C: 78% Many pre-1992 furnaces have efficiencies around _______. A: 10% B: 40% C: 60% D: 80% correct answers C: 60% Today, furnaces with AFUE ratings greater than _____ are available. A: 85% B: 90%

Charging a heat pump with refrigerant is best accomplished in the _______ mode. A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode correct answers B: Cooling mode Heat pumps can provide both heating in the winter and cooling in the summer. In which mode is the heat pump more efficient? A: Heating mode B: Cooling mode C: Defrost mode D: Emergency heating mode correct answers A: Heating mode Which of the following components is exclusive...

On an R-22 system, line diameters and lengths are typically specified for a vapor pressure drop that does not exceed what? correct answers 6-7PSI or 6F What is the primary purpose of using flux when soldering copper or brass parts? correct answers Prevent Oxidation The water that results from a defrost cycle of an air to air heat pump(runoff) must? correct answers Drain off and away from the outdoor coil. Why must the runoff be drained off and away from the outdoor coil? correct answers...

A condensing unit should be mounted on a slab that is level to: A: Allow any accumulated water to evenly run out of the cabinet B: Increase airflow through the fin area C: Prevent the unit from tipping over D: Make certain any top discharge air blows straight up correct answers A A simple time-activated switch is an example of a control that does not use: A: Feedback B: Electronics C: Calibration D: Manual adjustment correct answers A Which of the following systems ...

A judgment correct answers An opinion is Easy to use correct answers Which of the following is a future of a product or service A truth correct answers A fact is Saves time correct answers Which of the following is a benefit of a product or service DOT correct answers Which of the following agencies has jurisdiction over the shipping and labeling of refrigerant cylinders? The flow of electrons through a conductor correct answers Electricity is Electrical pressure correct answer...