 |  Measurement of Power & Energy 30 Flashcards |  Start |
 | What is the formula for calculating electric power in a DC circuit? |  Card: 1 / 30 |
| P = V × I | Card: 2 / 30 |
| Fill in the blank: The average power in a single-phase AC circuit is defined as the product of the ______ and ______ values of voltage and current. | Card: 3 / 30 |
| Effective (R.M.S.), effective (R.M.S.) | Card: 4 / 30 |
| True or False: In a balanced three-phase circuit, the line voltages are equal. | Card: 5 / 30 |
| True | Card: 6 / 30 |
| Riddle: I measure the energy consumed, turning action into digits, my face may be analog or digital. What am I? | Card: 7 / 30 |
| Energy meter | Card: 8 / 30 |
| What method is used to determine the time difference between voltage and current in an AC system? | Card: 9 / 30 |
| Zero cross detection | Card: 10 / 30 |
| Which of the following formulas represents instantaneous power in an AC circuit? A) P = VI B) P(t) = v(t)i(t) C) P = V²/R D) P = I²R | Card: 11 / 30 |
| B) P(t) = v(t)i(t) | Card: 12 / 30 |
| Fill in the blank: The total power in a balanced three-phase system can be calculated using the formula ______. | Card: 13 / 30 |
| PT = VL IL cosΦ | Card: 14 / 30 |
| True or False: The reactive power in an AC circuit is the total power consumed by the load. | Card: 15 / 30 |
|  Unlock all Flashcards with EduRev Infinity Plan Starting from @ ₹99 only | |
| False. Reactive power is the power that oscillates between the source and the load, not consumed. | Card: 16 / 30 |
| What type of energy meter is characterized by a rotating aluminum disc and is commonly used? | Card: 17 / 30 |
| Electro-Mechanical induction type Energy meter | Card: 18 / 30 |
| Riddle: I’m a measure of the angle between voltage and current, expressed as the cosine of that angle. What am I? | Card: 19 / 30 |
| Power Factor | Card: 20 / 30 |
| What is the SI unit of energy, heat, and work? | Card: 21 / 30 |
| Joule (J) | Card: 22 / 30 |
| Fill in the blank: The formula to calculate energy consumed by a load is [number of hours’ use] x [number of days’ use] x ([capacity of appliance expressed in watt] / ______) = number of kWh. | Card: 23 / 30 |
| 1,000 | Card: 24 / 30 |
| True or False: Smart energy meters can only communicate data in one direction. | Card: 25 / 30 |
| False. Smart energy meters can communicate in both directions. | Card: 26 / 30 |
| What is the relationship between Total Harmonic Distortion and the distortion factor in non-sinusoidal currents? | Card: 27 / 30 |
| The relationship can be derived from specific expressions related to power factor. | Card: 28 / 30 |
| Which type of energy meter measures power instantaneously and is preferred for its accuracy? | Card: 29 / 30 |
| Electronic Energy Meters | Card: 30 / 30 |
| Completed! Keep practicing to master all of them. |  Restart |
