Answer / engr.masoodali

to get overall efficiency of diesel generator set u have to consider following things alo
1 mechanical efficiency of engine usaully 80-85%
2 efficiency of generator 95- 98%
overall efficiency = thermal * mechanical * generator

Answer / anand kr tiwari

Overall efficiency=

KW generated /(mass of fuelx CV of fuel)

which theorem is used to analyse fault a)thevinin b)Norton c)Superposition d)jordan

1 Answers   FFC, NTS,

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how to set time from star to delta starter

2 Answers  

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Why the bypass and blocking diodes are used in solar modules?

1 Answers  

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Why different values of B’s (magnetic flux density) are chosen for DC machines and Induction Motors?

1 Answers  

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To attain a powerfactor more than .95, how much kvr should we use for 100 HP of current

4 Answers   Bhel, Scooters India,

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how to calculate the size of the HT cable

0 Answers  

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How many 2 ton window A/c can runs on a 125 KVA generator?

2 Answers  

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On load tap changer (OLTC) explode? Transformer Vector group: Ynd11 Rated Power: 353MVA Rated Current: 693A Voltage:294/20KV OLTC Type: T III Y1000 110/c 12193w Max Operation Current: 295A Step Voltage: 550V Arrangement in Tx windings: Y Connection Problem: Damage of Unit 1 Generator Transformer On Load Tap Changer (OLTC) Description of Incident: 9.00 a.m. :- Generator No Load test on excitation system started 10.30 a.m :- Carried out AVR change over test 11.30 a.m :- Preparation for Generator Manual Synchronizing test 12.00 a.m :- Manual Synshronizing test started. Observed incoming generator voltage higher than running voltage. CECR operator operated Generator Transformer OLTC to bring down the incoming generator voltage 12.03 a.m :-Generator Transformer abnormal alarm operated at Gen.Control Desk (CECR) CECR operater at Generator transformer bay informed that the transformer oil splashed out from OLTC. CECR operater informed that he heard explosion inside OLTC. Observed Oil level & Oil Flow alaram operated at Tranformer local annunciator. 12.05 am :- CECR operator 'Open Gen Field Breaker” 12.10 a.m. :- Elec1 team inspected the OLTC and found the OLTC rupture disk was broken and oil spilled at OLTC area. - Elec1 found the OLTC top cover bulging. Do anyone know why and possibility cause happen in this OLTC.

9 Answers  

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what is the fuction of electrical transducer in control pannel?

6 Answers  

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How to design the blower for motor? how to two blowers connected in motor?

1 Answers   Ashok Leyland, TATA,

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differance b|w ground, neutral&earth

11 Answers   Bhel, SKH Metals,

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What is the difference between MPP, APP, Mixed Dielectric power capacitors? Which technology is superior in current scenario?

5 Answers  

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