Interested to Buy Any Domain ? << Click Here >> for more details...
why voltage rating not mention at HPSV or HPMV lamps?
- 2 Answers
- 6897 Views
- OPS, I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
High voltage is required to strike the arc inside lamp at
the starting point and once the arc is struck and lamp is
illuminated ,the voltage across the lamp is zero.It is the
ballast which has to control the current and it requires
voltage rating and not the lamp
| Is This Answer Correct ? | 7 Yes | 2 No |
Post New Answer View All Answers
If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?
any one guide me to reduce the power factor of diesel Generator from 0.97 Leg to 0.8 Leg.with out any change in my load.
I am having dual speed motor of cromton greaves make of 3.7 KW -1400 rpm and 5 KW - 900 rpm. Please let me know groups and winding connction for rewinding purpose.
How two nos. 130 kw D.C motor get synchronise using D.C drive.
How many types of electric motors are there?
How to Calculate The sag of OPGW in Transmission Line???
In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?
As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.
why capacitance effect is predominant in underground cable transmission and inductance effect is predominant in over head line transmission?
If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?
HOW TO CALCULATE CAPACITOR BANK OR HARMONIC FILTER CALCULATION
i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors
why we permissive overreach in distance protection.where it is applicable to use in long r short lines
State the points to be considered for selecting a particular type wiring.
sir,in our plant we r using SATEC PM172E power reading meeters in HT panel side it is monitoring the MB data smart viewer(sever).but last one week we did not get readings inthe server only available in meeter.tell me how communicate meter and server. and also what steps we take for checking.
