Interested to Buy Any Domain ? << Click Here >> for more details...
Why no-load primary current is very small
as compared to full load current in transformer (as 1% of
full load current?
- 5 Answers
- 21090 Views
- NTPC, I also Faced
- E-Mail Answers
Answer Posted / masoom raza
when secondary is open circuit the current in primary
is low i.e only magnetizing is present to create flux
in core.but when load is connected in secondary side it
produces its own ampere turn N2I2 which reduces the flux
in core . in order to maintain the flux constant, primary current increases to balance N2I2 i.e
N1I1=N2I2(neglecting magnetizing current)
therefore primary current increases when load
is connected.
| Is This Answer Correct ? | 3 Yes | 3 No |
Post New Answer View All Answers
- two pumps must work with them at the same time but if the first pump start the second pump must delayed for some time to start also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it
what is the transformer turn ratio formula and give some examples?
A 100KVA SINGLE PHASE TRANSFORMER 10000/200V,50HZ REQUIRES 300V AT HV SIDE TO CIRCULATE FULL LOAD CURRENT WITH LV SHORT CIRCUITED.THE INTAKE IS 1000W.THE % OF REGULATION ON FULL LOAD AT 0.8 PF LAGGING WILL BE HOW MUCH AND THE SECONDARY TERMINAL VOLTAGE ON 0.8 PF LEADING WILL BE
Give the topology of current amplifier with current shunt feedback?
can we install HT panel & LT panel side by side or how much clearance is required ?
What aturn on methods of scr?
what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..
As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?
Why we use duplex coil and hook switch in telephone system?
What does a Bode plot tell you?
what is meant by the phrase 'static load' in case of shorting in a generator excitation system?
How we can calculate the life of Lead acid battery
How does a transformer contribute towards the widespread popularity of ac system over dc?
What is the emf equation of a transformer?
A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N
