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Electrical Engineering questions with answers

here are 10 more multiple-choice questions related to electrical power systems:

  1. What is the purpose of a power factor correction capacitor in an electrical power system? A) To increase the system’s power factor B) To decrease the system’s power factor C) To regulate voltage D) To store electrical energy Answer: A) To increase the system’s power factor
  2. What is the primary advantage of a three-phase power system over a single-phase power system? A) Greater voltage stability B) Higher efficiency C) Lower cost D) All of the above Answer: D) All of the above
  3. What is the purpose of a current transformer in an electrical power system? A) To measure current flow in a circuit B) To measure voltage in a circuit C) To regulate voltage D) To store electrical energy Answer: A) To measure current flow in a circuit
  4. What is the formula for calculating real power in a three-phase system? A) P = VI B) P = V^2/R C) P = 3VILcos(θ) D) P = V^2/Rcos(θ) Answer: C) P = 3VILcos(θ)
  5. What is the purpose of a synchroscope in an electrical power system? A) To measure current flow in a circuit B) To measure voltage in a circuit C) To synchronize two generators in parallel D) To regulate voltage Answer: C) To synchronize two generators in parallel
  6. What is the function of a step-down transformer in an electrical power system? A) To step up voltage for transmission B) To step down voltage for distribution C) To regulate voltage D) To store electrical energy Answer: B) To step down voltage for distribution
  7. What is the purpose of a shunt reactor in an electrical power system? A) To compensate for inductive loads B) To compensate for capacitive loads C) To regulate voltage D) To store electrical energy Answer: A) To compensate for inductive loads
  8. Which of the following is a type of electrical power distribution system? A) Radial system B) Ring system C) Both A and B D) Neither A nor B Answer: C) Both A and B
  9. What is the function of a surge arrester in an electrical power system? A) To regulate voltage B) To protect against lightning strikes and power surges C) To store electrical energy D) To measure current flow in a circuit Answer: B) To protect against lightning strikes and power surges
  10. Which of the following is a common method for frequency control in an electrical power system? A) Load shedding B) Automatic generation control C) Voltage regulation D) All of the above Answer: B) Automatic generation control
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