Answer / kingshuk dey

On-delay timers: The timer coil is given supply, the time is measured, the NO contact become NC (or vice-versa).

Off-delay timers: Supply to timer coil is stopped, the time is measured, then the NC contact becomes NO (or vice-versa).

The timer, in both cases, won't require power as it is spring driven (like normal watches' time counters).

Difference is that on-delay timer starts counting when supply is given and resets when supply is removed, off-delay timer starts counting when supply is removed, and resets when supply is given.

Difference between 3.5 core and 4 core

2 Answers  

---

Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?

0 Answers   Hindalco,

---

UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?

2 Answers  

---

what is the meaning of bus bar, in electrical panels.

13 Answers   HLG Habtoor Leighton Group,

---

A well system is when , no. of bus bar is less or more. Tell me the concept of it.

0 Answers  

---

---

what is difference between induction motor&servo motor.what r types of servo motor?how it works?

1 Answers  

---

what is difference between KW,KVA,KVAR? also give me the formula for all the three...

3 Answers  

---

How to calculate busbar size & what is the procedure we make for determine that?

35 Answers   Auko Tex, Integra, PowerTech, Shadhin Group,

---

BSNL TTA EXAM QUESTION

0 Answers   BSNL,

---

Sir 33kva 2 transformer load 900 amp calc 1800 amp mana jayega

0 Answers   Classic Infotech,

---

at what basis/standard we have to arrive the current density of aluminium/ copper in busbar?

0 Answers   ONGC,

---

How to generate neutral in DG set?

3 Answers  

---