To avoid the effect of stray magnetic field in A.C. bridges we can use
1). Magnetic screening
2). Wagner earthing device
3). Wave filters
4). Any of the above
To avoid the effect of stray magnetic field in A.C. bridges we can use magnetic screening or magnetic shielding.
Magnetic screening is a technique used to prevent magnetization of metals nearby a magnet or current carrying conductor which is a source of magnetic field.1. The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees.
2. Which of the following is the commonly used type of electromagnets ?
4. An ideal transformer is one which has
5. An efficient and a well designed protective relaying should have
6. If biasing is not done in an amplifier circuit, it results in ___________