why two contacts(in series) are using in closing circuit
Answers were Sorted based on User's Feedback
You mean 2 contacts are made in series in a MCB? That is to
make doubly sure of opening the circuit.If parallel ,it is
to make closing doubly sure ,as you can expect one of the
contacts to open or close definitely .
Is This Answer Correct ? | 0 Yes | 0 No |
what is the working principle of three point starter of dc motor?
1 Answers Ashok Leyland, Cap Gemini, Infosys, Just Dial,
how to compute kvar in substation feeder to improve power factor and sending voltage
Why? We r used 50sq. mm. And above size cable in 3.5 core and below size are used in 4core
Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?
Interchange 7 and 6 ,÷and× 36×7+4-7×3
Which of the following statements is incorrect?(a) 1N = 1 kgm/s2(b) 1V = 1 J/C(c) 30mA = 0.03A(d) 1 J = 1N/m
what are safety seals in HT line?
What is the diameter of electromagnetic field around a 11000/415v transformer ? Dose it affect people who live 3-4 meter beside it?
What is the ladder circuit?
1 Answers Mitharg Information Systems,
Frequency of rotor emf in induction motor is around A same as stator frequency B 50% C 5 % or below D 30%
how dose servo motor works
what material is the electrical housing wire made of? is there any difference for the telephone lines?