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athree-phase 440-v 60-hz four-pole induction motor operates at a slip of 0025 at full load with its rotor circuit short-circuited this motor is to be
a 2200-v 1000-hp three-phase 60-hz 16-pole wye-connected wound-rotor induction motor is connected to a 2200-v three-phase 60-hz bus that is supplied
a three-phase four-pole 220-v 60-hz induction machine with a per-phase resistance of 05 is operating at rated voltage as a generator at a slip of
a three-phase 2200-v 60-hz delta-connected squirrel-cage induction motor when started at full rated voltage takes a starting current of 693 a from
a three-phase 400-v wye-connected induction motor takes the full-load current at 45 v with the rotor blocked the full-load slip is 4 calculate the
a large induction motor is usually started by applying a reduced voltage across themotor such a voltage may be obtained from an autotrans- former a
the no-load and blocked-rotor tests on a three phase wye-connected induction motor yield the following resultsbull no-load test line-to-line voltage
the synchronous speed of a wound-rotor induction motor is 900 rmin under a blocked-rotor condition the input power to the motor is 45 kw at 1936 a
a three-phase 220-v 60-hz four-pole wye connected induction motor has a per-phase stator resistance of 05 the following no-load and blocked rotor
a three-phase 50-hp 440-v 60-hz four-pole wound-rotor inductionmotor operates at a slip of 003 at full loadwith its slip rings short-circuited the
using the approximate equivalent circuit in which the shunt branch is moved to the stator in put terminals show that the rotor current torque and
a squirrel-cage inductionmotor operates at a slip of 005 at full load the rotor current at starting is five times the rotor current at full load
athree-phasewye-connected 220-v 10-hp 60- hz six-pole inductionmotor using figure 1326 for notation has the following parameters in ohms per phase
a 500-hp wye-connected wound-rotor induction motor when operated at rated voltage and frequency develops its rated full-load output at a slip of 002
a three-phase wye-connected 400-v four-pole 60-hz induction motor has primary leakage mpedance of 1 j2 and secondary leakage mpedance referred to
a three-phase induction motor operating at its rated voltage and frequency develops a starting torque of 16 times the full-load torque and a maximum
the stator and rotor of a three-phase 440-v 15-hp 60-hz eight-pole wound-rotor induction motor are both connected in wye and have the following
the power transferred across the air gap of a two pole inductionmotor is 24 kw if the electromag netic power developed is 22 kw find the slip
a three-phase 5-hp 220-v six-pole 60-hz in- duction motor runs at a slip of 0025 at full load rotational and stray-load losses at full load are 5 of
no-load and blocked-rotor tests are conducted on a three-phasewye-connected inductionmotor with the following results the line-to-line voltage line
abalanced three-phase 60-hz voltage is applied to a three-phase two-pole induction motor corresponding to a per-unit slip of 005 determine the
consider the operation of a dc shuntmotor that is affected by the following changes in its operating conditions explain the corresponding approximate
a dc machine operating as a generator develops 400 v at its armature terminals corresponding to a field current of 4 a when the rotor is driven at
a dc shunt motor runs off a constant 200-v supply the armaturewinding resistance is 04 and the eld winding resistance is 100 whenthe motor develops
a 100-kw dc shunt generator connected to a 220-v main is belt-driven at 300 rmin when the belt suddenly breaks and the machine continues to run as a