The co-efficient of coupling between two air core coils depends on

Related MCQs

• Two coils have inductances of 8 mH and 18 mH and a co-efficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be
• The self inductances of two coils are 8 mH and 18 mH. If the co-efficients of coupling is 0.5, the mutual inductance of the coils is
• Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be
• Two 300 uH coils in series without mutual coupling have a total inductance of
• Air-core coils are practically free from
• Mutually inductance between two magnetically-coupled coils depends on
• A ferrite core has less eddy current loss than an iron core because
• The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the in ductance will be
• In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will
• capacitors are used for audio frequency and radio frequency coupling and tuning.