What is the basic difference among Circuit breaker,Contractor and Isolator? Are they different names of same device/equipment?

2 Answers  

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What conditions are required for transformer to operate at low frequencies ?

0 Answers  

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l&t switch FN 63 handle position can we change

0 Answers   OPTCL,

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if any one phase of the 11kv/415v distribution transformer not delivering the supply voltage what will happen

2 Answers  

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Why Power factor is different - different in all three phase of a 3 phase nduction motor.

2 Answers  

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Briefly define and explain the following different types of Pulse Amplitude Modulation (PAM) with some examples. i) 2-PAM ii) 4-PAM iii) 8-PAM iv) 16-PAM v) Quadrature Amplitude Modulation (QAM)

0 Answers   UOG,

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induction motor. we have a three phase supply from diffrent source like R= transformer. Y = DG sets. B = ups. if motor is runing.

4 Answers   Birla,

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at present how many EHVAC lines are there in India?

8 Answers   HCL, L&T,

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what is the mho relay

3 Answers  

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I am inpecting a 10kVA UPS what tests should i do and should i observe?

0 Answers  

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how capacitor control the power factor/

2 Answers   ABB, Apollo,

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the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.

4 Answers  

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