A long shunt generator supplies a load of 5.5 kW at 110 V. Shunt field. series field and armature resistance are 110ohm, 0.04ohm and 0.06ohm respectively. Take the brush drop 1 volts per brush. Calculate the emf generated.

A dc shunt generator delivers 50 kw at 250 v, its armature has a 4-pole wave winding with a resistance of 0.01 ohm and its field resistance is 125 ohm. if the number of turns in the armature is 201 and the flux per pole is 0.02 wb, find the voltage generated and the speed of operation. *

Problem # 1: A four-pole DC machine has a wave winding of 300 turns. The flux per pole is 0.025 Wb. The DC machine rotates at 1000 rpm. a) Determine the machine constant, b) Determine the generated voltage, c) Determine the kW rating if the rated current through the turn is 25 A. Problem # 2: The following information is taken from the nameplate of a separately-excited dc generator. Armature: 120 kW, 600 V, 0.15 Q. Field: 100 V, 6.0 A At its rated speed of 3600 rpm the no-load torque is measured at 16 Nm. Ignore armature reaction and magnetic saturation. a) For rated load conditions determine: i) Rated Shaft Horsepower ii) Rated Efficiency iii) Load Impedance b) Determine the terminal voltage, kW output and the efficiency if the field current is reduced to 4.5 A, and the speed is reduced to 3000 rpm, causing the rotational losses to become 4 kW. The load impedance is unchanged.

In a motor-generator set, calculate the number of poles required in the motor to convert AC 60 Hz input, to AC 50 Hz output. Given that the number of poles of the generator is given as 10 poles. Select one: O a. Pm = 18 poles O b. Pm = 12 poles O c. Pm = 8 poles O d. None O e. Pm = 10 poles Clear my choice

18. A 4-pole lap-wound armature has 144 slots with two coil sides per slot, each coil having two turns. If the flux per pole is 20-mWb and the armature rotates at 720-rpm. What is the induced voltage? B. 138.24 V C. 332 V D. none of these A. 120 V pruttha

(Draw the Circuit Diagram)  A self-excited shunt generator has a field resistance of 60 ohms. When the generator delivers 6 kW, the terminal voltage is 120 V, while the generated emf is 133 V. Determinethe armature resistance

A 75.0 kW, 230-V shunt generator has a generated emf of 243.5 V. If the field current is 12.5 A at rated output, what is the armature resistance?