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the coil of a moving coil meter is wound with 75 turns on a former of effective length 25 cm and diameter 2 cm the
1 a conductor when placed at right angles to a magnetic field of density 700 mt experiences a force of 20 mn when
project - r coding and modellingproblem 1 -as a data scientist hired by uber you have been asked to simply figure out
figure 544 represents two of the armature conductors of a dc generator rotating in a clockwise direction copy this
1 a coil of 15 000 turns is required to produce an emf of 15 kv determine the rate of change of flux that must link
1 when a magnetic flux linking a coil changes an emf is induced in the coil explain the factors that determinea the
1 a waveform has a form factor of 16 and an average value of 10 v calculate its rms value2 a moving coil voltmeter
1 calculate the peak and average values for a 250 v sinusoidal supply2 a sinusoidal current has an average value of 38
for a current of rms value 5 a and frequency 2 khz write down the standard expression hence calculatea the
write down the standard expression for a voltage of rms value 45 v and frequency 15 khz hence calculate the
a sinusoidal voltage is generated by an 85 turn coil of dimensions 20 cm by 16 cm the coil is rotated at 3000 revmin
a sinusoidal current has a peak-to-peak value of 15 ma and a frequency of 100 hza plot this waveform to a base of time
a coil is rotated between a pair of poles calculate the frequency of the generated emf if the rotational speed isa 150
1 a coil of self-inductance 004 h has a resistance of 15 omega calculate the energy stored when it is connected to a 24
1 sketch the circuit symbol for a transformer and explain its principle of operation why is the core made from
1 a 41 voltage lsquo step-down transformer is connected to a 110 v ac supply if the current drawn from this supply is
the mutual inductance between the two windings of a car ignition coil is 5 h calculate the average emf induced in the
the mutual inductance between two coils is 250 mh if the current in one coil changes from 14 a to 5 a in 15 ms
two coils of self-inductance 50 mh and 85 mh respectively are placed parallel to each other if the coupling coefficient
two air-cored coils a and b are wound with 100 and 500 turns respectively a current of 5 a in a produces a flux of 15
the waveform displayed on an oscilloscope is as shown in fig 640 the timebase is set to 100 muscm and the y-amp is set
a generator produces an armature current of 50 a when generating an emf of 400 v if the terminal pd is 390 v calculatea
a dc shunt generator supplies a 50 kw load at a terminal voltage of 250 v the armature and field circuit resistances
a 47 mu f capacitor is connected in series with a 39 komega resistor across a 24 v dc supply calculatea the circuit
an inductor of negligible resistance and of inductance 025 h is connected in series with a 15 komega resistor across a