The shunt dc generator runs, but there is no output voltage because of Select one: O a all mentioned answers are right. Ob. reversing in speed of rotation Oc no residual flux Od reversing in polarity
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- A elearn * Question Completion Status: 7 8 9. 10 QUESTION 13 E-06, PC-05. An induced current in a coil? Does not affect the EMF producing it. Aids the EMF producing it. Opposes the EMF producing it. QUESTION 14 E-06, PC-05. The induced EMF in a coil can be increases by? By adding more number of turns. Decrease the change in flux. Increase the change in time. QUESTION 15 E-06, PC-03. An Inductor's time constant is given by? O L2 /R. L/R. LR.If residual magnetism of a shunt generator is destroyed due to any reason, it may be restored by connecting its shunt field O to an AC source O to a DC source O to neutral O to earthQuestion 2 When the load is connected to the synchronous generator, it suddenly slow down due to rotor come out of synchronism load torque acts in opposition to turbine torque None load torque acts in addition with turbine torque
- In dc generator, the reversal of current from one direction to another direction is calledamature windings commonly used in DC machines a DC shunt generator are wound with a large numbe C generator can be used for battery charging?A 6 pole DC lap wound generator has 41 armature conductors with flux per pole is 23 mWb and the e.m.f generated is 80 V, then the speed of the machine is O 0.74 rps O 84.84 rps O 7.43 rps 84.84 rps
- 4-ls the residual magnetism on the generator is necessary how can you cancel these residual magnetism in D.c generatorAs speed of D.C motor is increased the back EMF --and current drawn - decreases, decreases O decreases , increases increases , decreases O increases, increases The speed of a d.c. motor is Inversely proportional to the applied voltage Directly proportional to flux per pole None of the answers O Inversely proportional to flux per poleA 100kW generator, 250V, 6 poles have a wave wound armature with 300 turns then the number of compensating winding turns per pole is if the ratio of pole arc/pole pitch is 0.72 bii 13 .approximately equal to ---- none of the mentioned. 18 8 50 O 16 O 36
- To change the direction of rotation of a series wound DC generator the general rule is toQuestion 9 A short shunt compound generator has the following armature, series field and shunt field resistances are 0.22 ohm, 0.21 ohm and 52 ohms respectively. The generator serves a 35 kW, 106 V load through a feeder with an equivalent resistance of 0.05 ohm. Solve for the power generated by the armature. • 2 decimal places • No need unit Round your answer to 2 decimal places. Add your answer0-20A (A R. Rim 0-20A [+] A ww- 1k -D220 V M G Ree Jik 0-2A B. A/ Explain how the speed of the motor can be controlled. B/ Explain how the stator coil current of the motor can be controlled. C/ Explain how the speed of the generator can be controlled. D/ Explain how the field current of the generator can be controlled. 3- Phase, 50 Hz 400V, A.C. Supply