Alternating Current questions
577 published questions with worked solutions.
- The reactance of the coil is 10 and its resistance is 10 . It is connected to an A.C. source of e. m. f. 220 V. The peak value of...
- The angular frequency of A.C. at which 1 mH inductor has a resistance of 1 is
- With an increase in the frequency of an A.C. supply, the inductive reactance
- Wattless current is a current flowing through a
- The power factor of a series LCR circuit at resonance, is
- In series resonant circuit, at resonance,
- In rejector circuit, above resonant frequency is
- At resonance, the source current is
- In series resonance, LCR circuit, below the resonant frequency, the circuit is
- In parallel resonance, the current will be minimum, when
- A coil of self inductance 1 henry is connected in series with a 300 resistance. A voltage of 200 volt at frequency 200 Hz is...
- A loss-free transformer has 500 turns on its primary winding and 2500 in secondary. The meters of the secondary coil indicate 200...
- A transformer has 100 turns in the primary and 500 turns in the secondary. If the primary is connected to 200 V D.C. supply, then...
- The ratio of secondary to the primary turns in a transformer is 3:2. If the power output be P, then the input power neglecting...
- A 100% efficient transformer has 100 turns in the primary and 25 turns in its secondary coil. If the current in the secondary...
- A step-down transformer is connected to 2400 volt line and 80 ampere of current is found to flow in output load. The ratio of the...
- The primary winding of a transformer has 100 turns and its secondary winding has 200 turns. The primary is connected to an A.C...
- The number of turns in the primary coil of a transformer is 1000. A power of 2 kW is fed to it by a current of 0.1 A. The number...
- In a transformer, 220 A.C. voltage is increased to 2200 volts. If the number of turns in the secondary are 2000, then the number...
- A 40 electric heater is connected to a 200 V, 50 Hz mains supply. The peak value of electric current flowing in the circuit is...
Other chapters
Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and IntegrationChemical Kinetics