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SurendraReddy_ElectricTeacher
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This is a public channel launched by Mr. Surendra Reddy. It is intended to post practice questions and answers on Electrical Machines subject. Call us: 9515694053 Visit: www.ohminstitute.com
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频道帖子
The operating slip of a 3-phase, 400 V, Y-connected, 50 Hz, 2-pole induction motor is 0.06 and it's rotor voltage per phase at this slip is 10 V. What would be the turns ratio of this motor?
| 2 | The magnetizing reactance of a transformer is independent of ____ | 1 156 |
| 3 | https://www.youtube.com/live/SsH2iFqqF9A?si=QRoLltjXVl9qeMgR | 1 914 |
| 4 | The short circuit test details of a 1000V, 20 kVA transformer is 50V, rated current, 600 W. What would be the % voltage regulation at full-load, ZPF leading power factor? | 1 929 |
| 5 | https://www.youtube.com/live/87tq5b-padY?si=QkV389dbjJlAM1dv | 2 013 |
| 6 | Is it wise to leave a PSU job for an engineering position in a State Electricity Department? | 2 216 |
| 7 | The starting current drawn by a 400 V DC motor is 200 A and it's full load current is 20 A. What would be the value of back emf at an armature current of 15 A? | 2 247 |
| 8 | Managing time effectively during exam preparation is essential for success. Here are some of the best methods to help:
1. Create a Study Schedule: Plan your time by creating a realistic schedule that includes all subjects/topics. Allocate more time for challenging areas and ensure regular breaks.
2. Set Priorities and Goals: Prioritize topics based on their importance and difficulty. Set clear, achievable goals for each study session to stay focused.
3. Use the Pomodoro Technique: Study for 25 minutes, then take a 5-minute break. After four cycles, take a longer break. This method helps maintain focus and prevents burnout.
4. Break Down Topics: Break complex topics into smaller sections to make them more manageable. Focus on mastering one section before moving to the next.
5. Practice with Timed Tests: Regularly test yourself under exam conditions. This not only improves time management but also builds confidence.
6. Limit Distractions: Find a quiet study space, turn off notifications, and avoid social media during study time.
7. Revise Regularly: Dedicate time each day for review to reinforce learning. Avoid cramming, as it’s less effective and increases stress.
8. Take Care of Health: Rest, nutrition, and exercise are crucial. A clear mind and a healthy body improve focus and memory.
9. Reflect and Adjust: At the end of each day or week, reflect on what’s working and adjust your plan if needed. | 3 156 |
| 9 | A separately excited DC generator is feeding a 10 kW load with an armature copper loss of 400 W. The induced emf is 500 V. What would be the terminal voltage of this generator? | 2 261 |
| 10 | Formula for competitive exams:
Learn → Revise → Practice → Test → Analyze → Repeat | 2 686 |
| 11 | The slip speed of a 6-pole induction generator is 300 rpm and its stator frequency is 50 Hz. It's rotor speed in rpm would be ___ | 3 298 |
| 12 | The value of interpole MMF in a DC machine is ____ | 3 071 |
| 13 |  没有文字... | 3 499 |
| 14 | It is very happy to announce that the AEEs Recruitment file was approved in todays AP Cabinet Meeting:
200 Transco (170 E, 15 C, 15 T) 329 Discom and 100 Genco AEEs on Direct Recruitment Regular basis. (During 2 years Training and Probation 75k pay, later AEE scale 86K)
AP POWER SECTOR RECRUITMENT UPDATE | 3 528 |
| 15 | A 24 kVA transformer has a full load power loss of 2 kW when the load is UPF type. Now the load power factor changes to 0.8 lag, without change in the kVA value. The new power loss would be ____ | 3 260 |
| 16 | https://youtu.be/7DJMFvKGOEM?si=cSvVGnzS51uCUGBz | 2 917 |
| 17 | Which of the following will represent the real power delivered by a salient pole rotor synchronous generator? | 2 773 |
| 18 | A 500 V DC shunt motor is drawing 200 A and driving a 500 N-m load. The armature resistance is 0.25 ohm. What would be the speed in rad/sec? | 2 841 |
| 19 | https://www.youtube.com/live/mLEJOHoUV-Q?si=eFQ17aOy4HkEjApK | 2 390 |
| 20 | Which of the following is the correct relationship between back-pitch(Yb) and front-pitch(Yf) of a retro-progressive armature winding design? | 0 |
