Podcast
Questions and Answers
What is the growth rate for energy consumption expected to double in 10 years?
What is the growth rate for energy consumption expected to double in 10 years?
What is the equivalent resistance of each delta connected resistor when three 6.66 Ω resistors are connected in wye?
What is the equivalent resistance of each delta connected resistor when three 6.66 Ω resistors are connected in wye?
What wattage must a lamp have to produce the same illumination at 12 ft compared to a 75-watt lamp at 10 ft?
What wattage must a lamp have to produce the same illumination at 12 ft compared to a 75-watt lamp at 10 ft?
What type of tester is used to measure impurities in insulating oil?
What type of tester is used to measure impurities in insulating oil?
Signup and view all the answers
Which type of insulator is best suited for high voltage applications?
Which type of insulator is best suited for high voltage applications?
Signup and view all the answers
At parallel resonance, what is the relationship between the currents flowing in an inductor (L) and a capacitor (C)?
At parallel resonance, what is the relationship between the currents flowing in an inductor (L) and a capacitor (C)?
Signup and view all the answers
How much illumination will be produced at a distance of 1.55 m from a light source that produces 528 lux at 2.75 m?
How much illumination will be produced at a distance of 1.55 m from a light source that produces 528 lux at 2.75 m?
Signup and view all the answers
In an unbalanced load situation, which type of connection is considered suitable?
In an unbalanced load situation, which type of connection is considered suitable?
Signup and view all the answers
What type of test is used to determine the copper loss of a transformer?
What type of test is used to determine the copper loss of a transformer?
Signup and view all the answers
What is the coefficient of coupling for two magnetically coupled coils with mutual fluxes of 0.50 mWb and 0.75 mWb, and turns of 100 and 300 respectively?
What is the coefficient of coupling for two magnetically coupled coils with mutual fluxes of 0.50 mWb and 0.75 mWb, and turns of 100 and 300 respectively?
Signup and view all the answers
What is the peak envelope power for a single-sideband signal that generates a peak-to-peak voltage of 720 V on a 75-ohm antenna?
What is the peak envelope power for a single-sideband signal that generates a peak-to-peak voltage of 720 V on a 75-ohm antenna?
Signup and view all the answers
What capacitance value should be added to an induction motor drawing 50 kW at a 0.60 lagging power factor to increase the power factor to 0.90?
What capacitance value should be added to an induction motor drawing 50 kW at a 0.60 lagging power factor to increase the power factor to 0.90?
Signup and view all the answers
What is the inductance per phase per kilometer of a three-phase transposed line with given parameters?
What is the inductance per phase per kilometer of a three-phase transposed line with given parameters?
Signup and view all the answers
What voltage must a 230/115 V transformer operate at on a 50 Hz system to maintain similar magnetic flux as in a 60 Hz system?
What voltage must a 230/115 V transformer operate at on a 50 Hz system to maintain similar magnetic flux as in a 60 Hz system?
Signup and view all the answers
Which of the following summarizes the reason for using high voltage in power transmission systems?
Which of the following summarizes the reason for using high voltage in power transmission systems?
Signup and view all the answers
In an inductive circuit, how are capacitors connected to improve the power factor?
In an inductive circuit, how are capacitors connected to improve the power factor?
Signup and view all the answers
Zero-sequence current can flow from line to transformer banks in which connection?
Zero-sequence current can flow from line to transformer banks in which connection?
Signup and view all the answers
Where should the grease spot be placed for the illumination by the unknown light source to be exactly twice the illumination of the standard source?
Where should the grease spot be placed for the illumination by the unknown light source to be exactly twice the illumination of the standard source?
Signup and view all the answers
Which type of equations is the Gauss-Seidel method used for?
Which type of equations is the Gauss-Seidel method used for?
Signup and view all the answers
What is the purpose of a combined cycle power plant?
What is the purpose of a combined cycle power plant?
Signup and view all the answers
What size will the Jacobian matrix be for a 15-bus system with 3 voltage-controlled buses?
What size will the Jacobian matrix be for a 15-bus system with 3 voltage-controlled buses?
Signup and view all the answers
What is the relationship between average load and maximum load?
What is the relationship between average load and maximum load?
Signup and view all the answers
Compared to the Gauss-Seidel method, the Newton-Raphson method takes what type of time and iteration?
Compared to the Gauss-Seidel method, the Newton-Raphson method takes what type of time and iteration?
Signup and view all the answers
Circuit breakers are specifically rated based on which type of fault?
Circuit breakers are specifically rated based on which type of fault?
Signup and view all the answers
Where is the high tension winding located in transformers?
Where is the high tension winding located in transformers?
Signup and view all the answers
What effect does a series capacitor have on a transmission line?
What effect does a series capacitor have on a transmission line?
Signup and view all the answers
What is the rotor frequency of a 440 V, 8-pole, 50 Hz induction motor with a rotor speed of 720 rpm?
What is the rotor frequency of a 440 V, 8-pole, 50 Hz induction motor with a rotor speed of 720 rpm?
Signup and view all the answers
In a two-wattmeter method, when will one wattmeter's reading be zero?
In a two-wattmeter method, when will one wattmeter's reading be zero?
Signup and view all the answers
What is the mutual inductance of two inductors connected in series if their combined inductance is 40 mH when aiding and 17.5 mH when opposing?
What is the mutual inductance of two inductors connected in series if their combined inductance is 40 mH when aiding and 17.5 mH when opposing?
Signup and view all the answers
What is the speed of a 4-pole induction motor with 5% slip when supplied by a 60 Hz generator?
What is the speed of a 4-pole induction motor with 5% slip when supplied by a 60 Hz generator?
Signup and view all the answers
What is the total resistance when five resistors (5 Ω, 10 Ω, 15 Ω, 20 Ω, and 25 Ω) are connected in parallel?
What is the total resistance when five resistors (5 Ω, 10 Ω, 15 Ω, 20 Ω, and 25 Ω) are connected in parallel?
Signup and view all the answers
What happens to a charge placed on a dielectric material?
What happens to a charge placed on a dielectric material?
Signup and view all the answers
Which of the following statements about magnetic field lines is NOT true?
Which of the following statements about magnetic field lines is NOT true?
Signup and view all the answers
Which statement about magnetic flux lines is accurate?
Which statement about magnetic flux lines is accurate?
Signup and view all the answers
If two capacitors in series have a total equivalent capacitance of 7.3µF and one capacitor measures 9.6µF, what is the value of the other capacitor?
If two capacitors in series have a total equivalent capacitance of 7.3µF and one capacitor measures 9.6µF, what is the value of the other capacitor?
Signup and view all the answers
What is the definition of field resistance in DC motors?
What is the definition of field resistance in DC motors?
Signup and view all the answers
Which effect is generally less for alternating current than for direct current?
Which effect is generally less for alternating current than for direct current?
Signup and view all the answers
Which type of power plant cannot typically have a single unit of 100 MW?
Which type of power plant cannot typically have a single unit of 100 MW?
Signup and view all the answers
In the left-hand rule for motors, the thumb represents the direction of which component?
In the left-hand rule for motors, the thumb represents the direction of which component?
Signup and view all the answers
Study Notes
Past Board Exam Questions in Electrical Engineering Professional Subjects
- April 2019: Exam questions focused on properties of magnetic fields, capacitance, DC motors, and power plants.
- April 2019: Questions covered current transformers, transformers, and three-phase systems. Calculations for various electrical components and scenarios were also included.
- April 2019: Exam questions covered voltage dividers, energy consumption growth rates, resistor combinations, and types of power plants.
- September 2019: Exam questions focused on base load plants, transformer bandwidth, branch circuit sizing, and types of faults in transmission lines.
- September 2019: Questions related to transformer ratings, energy calculations in capacitors, and electronic communication types.
- September 2021: Exam questions included calculations involving magnetic fields, transformers, and various electrical components.
- April 2022: Exam questions covered concepts like thrashing, capacitor circuits and properties of magnetic fields.
- September 2022: Exam questions explored the following concepts/topics: Doppler frequencies, three phase transformer power and core losses, high resistance measurements.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers past board exam questions in electrical engineering, focusing on topics like magnetic fields, transformers, and power plants from various years. It includes calculations and concepts essential for understanding electrical systems and components. Prepare effectively for your professional examination with these curated questions.
