The generator voltage - Study guides, Class notes & Summaries

Epri Practice Test Questions and Answers Already Passed If a generator is producing 500 MW and 200 Mvar, is the generator? A. Leading B. Lagging C. Underexcited D. Dropping B. Lagging What is the IEEE device number for a differential relay? A. 87 B. 86 C. 67 D. 50 A. 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 reactive po...

Electric Motors Controls BOMA Pre-Quiz Latest Version Graded A+ How does a U.P.S. (Uninterruptible power supply) work? AC rectified to DC batteries then Inverted to AC Batteries energy capacity is measured in? Amp-hours Batteries have two rated values. Voltage and amp-hours How do you top off water in a battery cell? Distilled water when the level is below the plate. A voltage monitor relay is used for? Starting backup generators. Fuel for diesel generators is often stored ...

LRA 222 Final Exam| Questions and Verified Answers - (2024/ 2025 Update) 100% Correct | Grade A Q: A diode allows electrons to flow from _____. Answer: cathode to anode Q: True or False? The mAs timer is usually set to give the lowest mA at the longest time? Answer: False Q: What is amplitude? Answer: Height of a wave Q: Variations in power distribution to the xray machine are corrected by the _____. Answer: Line voltage Q: What is the most ...

1. If a 500 kV transmission line with a surge impedance loading of 800 MW is currently loaded at 1400 MW, which of the following events would most likely occur? a. Generator MVAR output would increase b. All system capacitors would trip off-line c. Generator MVAR output would decrease d. All automatic reactors would connect to the system -Answer a. Generator MVAR output would increase 2. When system conditions are such that emergency procedures are expected to be implemented, which of th...

What are the 5 basic electrical circuits fin automotive electrical systems? 1. Charging circuit 2. Starting 3. Ignition 4. Lighting 5. Accessory Which circuit supplies all of the electricity for a vehicle whenever the engine is running? The charging circuit What are the 4 basic parts of a charging circuit? 1. Batter 2. Alternator (generator) 3. Alternator Belt 4. Voltage regulator What is the usual type of battery used in automotive equipment? A lead-acid cell-typ...

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...

What is the most important law applicable to the study of electricity? - Answer-Ohm's Law (V = I x R) What are the elements of Ohm's Law? - Answer-Voltage (v), Current (I), Resistance (R) What are 4 sources of electrical power? - Answer-Mechanical (generator/ alternator), Chemical (battery), Photoelectric (light), and Thermal (heat) What does an electrical circuit consist of? - Answer-A source of electrical pressure (EMF), Resistance in the form of an energy consuming electrical devic...

PJM Transmission Exam Study Guide Questions and Answers Already Passed During System Restoration, what is the optimal Frequency Range? 59.75 - 61 Hz The 500 kV system has normal bus voltages between? 500 to 550 kV When Connecting 2 islands, the operator must match? Voltage, Phase Angle and Frequency What are the Minimum Source Requirements for a 500kV line? (Gen/mile and load/mile) 30 MW Gen/mile of energized 500 kV and 20 MW Load/mile of energized 500 kV When will PJM issue a M...

NEIEP 400 Final Exam V2 (New 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Graded A QUESTION which statement applies when a secondary winding is partially shorted?- Answer: current through the secondary is low. QUESTION the direction of the magnetic field around a wire when electron current flows through it can be determined by ? Answer: The left hand rule. QUESTION What are naturally magnetic mat...

(4-081-1.16) The output voltage of a shunt DC generator is varied by adjusting the: Select one: a. Pole piece air gaps b. Output current c. EMF d. Field rheostat d (4-085-1.11) The Bourdon tube is often shaped in the form of a "C", having an arc span of about: Select one: a. 270 degrees b. 90 degrees c. 180 degrees d. 200 degrees a (4-037-2.7) The extinguishing medium for a Class "D" fire is: Select one:a. Carbon dioxide b. Dry powder c. Aqueous film forming foam d. Dry chemi...