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a conductor moves with a velocity of 20ms at an angle of a 90 b 45 c 30 to a magnetic field produced among two square-faced poles of side length 25cm
a 25cm long conductor moves at a uniform speed of 8ms by a uniform magnetic field of flux density 12t verify the current flowing in the conductor
a a 400mm length of conductor carrying a current of 25a is situated at right-angles to a magnetic field among two poles of an electric motor the
calculate the current needed in a 240 mm length of conductor of a dc motor when the conductor is situated at right-angles to the magnetic field of
a coil of 600 turns is wound uniformly on a ring of non-magnetic material the ring has a uniform cross-sectional area of 200mm2 and a mean
a 4muf capacitor is connected in parallel with a 6muf capacitor this arrangement is then linked in series with a 10muf capacitor a supply pd of 250v
a ring forming a magnetic circuit is made from two materials one part is mild steel of mean length 25cm and cross-sectional area 4cm2 and the
a a cast steel ring has a cross-sectional area of 600mm2 and a radius of 25mm verify the mmf essential to establish a flux of 08mwb in the ring use
a closed magnetic circuit of cast steel have a 6cm long path of cross-sectional area 1 cm2 and a 2 cm path of cross-sectional area 05cm2 a coil of
a a uniform mild steel ring has a diameter of 50mm and a cross-sectional area of 1cm2 determine the mmf essential to produce a flux of 50microwb in
a steel ring of mean diameter 120mm is uniformly woundwith 1500 turns of wirewhen a current of 030a is passed by the coil a flux density of 15 t is
a mild steel ring has a radius of 50mm and a cross-sectional area of 400mm2 a current of 05 a flows in a coil wound uniformly around the ring and the
an iron ring of mean diameter 10 cm is uniformly wound with 2000 turns of wire when a current of 025 a is passed by the coil a flux density of 04 t
a coil of 300 turns is wound uniformly on a ring of non-magnetic material the ring has a mean circumference of 40cm and a uniform cross-sectional
a magnetizing force of 8000am is applied to a circular magnetic circuit of mean diameter 30cm by passing a current by a coil wound on the circuit if
explain process of carnot cyclecarnot cycle having of two adiabatic and two isothermal processes all are reversible to explain the carnot cycle
describe working of heat engine heat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat to
explain irreversible processa process which takes the system to the non equilibrium state is known as irreversible process it cant be retraced in
explain quasi-static isothermal expansiona method is reversible only if it is quasi-static and non dissipative eg a quasi-static isothermal
derive second law of thermodynamicsaccording the thermodynamics ii law efficiency never be unity or never exceed unity coefficient of
explain kelvin-planck statement and clausius statementkelvin-planck statement no process is possible whose sole result is the absorption of heat from
define isothermal process for isothermal process temperature remains constant ie deltau 0 thus according to first law of thermodynamics
derive first law of thermodynamicswhen an amount of heat energy is supplied to the system part of it enhances internal energy of the system and
derive zeroth lawstatement two systems in thermal equilibrium with a third system separately are in thermal equilibrium with each
define heat engineheat engine is a device by which a system is made to undergo a cyclic process that results in conversion of heat into workit is