what is the differenc between A.C. and D.C, which is more
dangerious?
Answer Posted / ankit
ac is alternate current.
Dc is direct current.
In our house 230 V ac is used. If u get
shock.. There is a chance to escape as
voltage is low and ac current crosses zero
at every half cycle...
But dc current can do much damage to u
as it does not crosses zero...constant full
dc voltage is applied to u.
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
Readings of ER300P Trivector meter
PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL
Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???
ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]
What is the disadventage of gland earthing(power cable) if any. ?
What is the use for cable entry in control room?
why dc is used in control circuits for MV & LV switchgeras instead of ac
I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400
What is mean by hot and cold loop testing?
Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?
Mention the methods for starting an induction motor?
how to caculate cable size for diff types of loads? if anyone know the calculating procedure please tell me
how much leakage current is allowed in MC61A L&T make relay?
what r the safety measures in UPS ? explain all?
Why we use duplex coil and hook switch in telephone system?