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a 3300v440v single-phase transformer takes a no-load current of 08a and the iron loss is 500wdraw the no-load phasor diagram anddetermine the values
draw the phasor diagram for an ideal transformer on no-loada a 500 v100v single-phase transformer takes a full load primary current of 4a neglecting
a transformer takes a current of 08a when its primary is connected to a 240 volt 50hz supply the secondary being on open circuit if the power
5kva single-phase transformer has a turns ratio of 101 and is fed from a 25kv supply neglecting losses determinea the full load secondary currentb
three similar coils each having a resistance of 8omega and an inductive reactance of 8omega are connected a in star andb in delta across a 415v
each phase of a delta-connected load comprises a resistance of 30omega and an 80microf capacitor in series the load is connected to a 400v 50hz
a 400v 3-phase star linked alternator supplies a delta-connected load each phase of which has a resistance of 30 and inductive reactance 40
a show that the total power in a 3-phase 3-wire system using the two-wattmeter process of measurement is given by the sum of the wattmeter readings
a 415v 3-phase ac motor has a power output of 1275kw and operates at a power factor of 077 lagging and with an efciency of 85 if the motor is
three coils each having resistance 3 omega and inductive reactance 4omega are linked i instar andii in delta to a 415v 3-phase supplycalculate for
three inductive loads each of resistance 4omega and reactance 9omega are linked in delta when linked to a 3-phase supply the loads consume
three similar coils each having a resistance of 8 and an inductive reactance of 8 are connecteda in star andb in delta across a 415v 3-phase
two wattmeters indicate 10 kw and 3 kw respectively when linked to measure the input power to a 3-phase balanced load the reverse switch being
a show that the total power in a 3-phase 3-wire system using the two-wattmeter method of measurement is given by the sum of the wattmeter readings
a circuit having of a 10muf capacitor connected in series with a 25 k resistor with a switchable 100v dc supply when the supply is connected
a 20 omega non-reactive resistor is connected in series with a coil of inductance 80mh and negligible resistance the combined circuit is connected
a 250v 50hz single-phase supply feeds the following loadsi incandescent lamps taking a current of 10a at unity power factorii fluorescent lamps
q can you define solar constantthe luminosity of the sun l is 3827times1026 watts when the sun is straight overhead on a clear day how many watts
a motor has an output of 48kw an efficiency of 80 and a power factor of 0625 lagging when operated from a 240v 50hz supplyit is needed to improve the
a coil of resistance 15k omega and 025h inductance is connected in parallel with a variable capacitance across a 10v 8khz supply calculate a the
a coil of inductance 100 mh and resistance 800omega is connected in parallel with a variable capacitor across a 12v 5khz supply determine for the
a 25nf capacitor is connected in parallel with a coil of resistance 2komega and inductance 020h across a 100v 4 khz supply determine a the current in
a coil of inductance 1592mh and resistance 40 is connected in parallel with a 30microf capacitor across a 240v 50hz supply calculatea the current in
three impedances are connected in series across a 100v 2khz supply the impedances comprisei an inductance of 045mh and 2 resistanceii an inductance
the following three impedances are connected in series across a 40v 20khz supplyi a resistance of 8ii a coil of inductance 130microhand5 resistance