10 % increase in voltage gives you 50 % increase in excitation current is called knee point voltage. To measure this first demagnetise the CT and apply voltage gradually from secondary keeping primary winding open circuited. while doing this above phenomeneo will be observed.
What is the difference between Silicon Controlled Switch (SCS) and Gate Turn-off Switch (GTO)?
Describe transducer EI pickups in instrumentation and control engineering?
What are the differences between voltage and current controlled devices?
Why the input resistance of an ideal OP-AMP is infinite and output resistance is zero?secondly, how can we measure these resistances(input and output) in case of an ideal OP-AMP and Real OP-AMP in the following conditions when1- load is not connected.2- load is connected.
Explain in wave guides TEM wave propagation is not exit, give the physical interpretation?
Explain what is the Tri State of a Signal?
Tell me why 440 volts instead of 660 volts in 3 phases of supply system?
What is the difference between PLC and DCS control system?
The number of columns in a state table for a sequential circuit with m flip-flops and n inputs is1. m + n 2. m + 2n3. 2m + n 4. 2m + 2n
Why does mode in arm in cpsr have 5 bits instead it can have only 3 bits to define all the 7 modes?
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