#1
17th July 2014, 09:03 AM
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NPTI PGDC Exam Old Question Papers
Will you please provide me the Electrical question paper of National Power Training Institute (NPTI) – PGDC (post graduate diploma in thermal power plant engineering) Exam???
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#2
17th July 2014, 11:51 AM
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Re: NPTI PGDC Exam Old Question Papers
Here I am providing you the Electrical question paper of National Power Training Institute (NPTI) – PGDC (post graduate diploma in thermal power plant engineering) Exam The armature resistance of a permanent magnet dc motor is 0.8 W. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be A single-phase half-controlled rectifier is driving a separately excited dc motor. The dc motor has a back emf constant of 0.5 V/rpm. The armature current is 5 A without any ripple. The armature resistance is 2. The converter is working from a 280 V, single phase ac source with a firing angle of 80°. Under this operating condition, the speed of the motor will be The 8085 assembly language instruction that stores the content of H and L registers into the memory locations 2050H and 2051H, respectively, is A 50 Hz, 4-pole, 500 MVA, 22 kV turbo-generator is delivering rated megavolt-amperes at 0.8 power factor. Suddenly a fault occurs reducing is electric power output by 40%. Neglect losses and assume constant power input to the shaft. The accelerating torque in the generator in MNm at the time of the fault will be |
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