A 15 kW, 280V, 1200 rpm WASHING MACHINE needs to be fed by a generator in your home. You have a friend in a generator manufacturer company. He gave you different options and as you're studying in EE department, he asked you to choose the best one from those! The generator details are as shown in Table 01. No Type of Generator 1 2 3 4 5 Table 01: Data for different types of generators Series Armature Field resistance resistance ( Resistance (0) Separately Excited 0.4 0.6 0.8 1.2 14 Shunt Series Long shunt Short shunt 120 140 c) The developed torque d) The efficiency 160 180 Note: X, Y are the last two digits of your student ID. Calculate the following things for each of the generator types: a) The generated voltage b) The field circuit voltage 22 24 26 Also neatly draw the circuit diagram for all of them. Hysteresis loss (kW) 0.X 0.8 1.25 I.Y Based on the results you got, which one you should buy and why? Eddy current loss (kW) 13 0.Y 1.7 0.Y 1.2 Rotational loss (kW) Suppose after 1 year, the washing machine got damaged. You went to Extra Store and decided to buy a new one with following rating: 15 kW, 840V. 1200 rpm. What should you do to use this machine, if you don't want to change the generator? Draw the modified circuit diagram. 1.2 2.2 L.X 0.4 1.5

Can you please answer Problem 49 to 51.

please help how to know if they are given terminal voltage or phase voltate. what is the difference between both and the answer would change?

The shunt field winding of a shunt generator has a resistance of 80 ohms at 20⁰C. After several hours of continuous operation, the winding temperature rises to 50⁰C. How much is the winding resistance under this condition, Assume the resistance temperature coefficient of copper to be 0.004 ohm per degree at 0⁰C.

A 4-pole, d.c. generator has a wave-wound armature with 792 conductors. The flux per pole is [751.3 r.p.m.] 1. 0.0121 Wb. Determine the speed at which it should be run to generate 240 V on no-load. 2. A 20 kW compound generator works on full-load with a terminal voltage of 230 V. The armature, series and shunt field resistances are 0.1, 0.05 and 115 Q2 respectively. Calculate the generated e.m.f. when the generator is connected short-shunt. [243.25 V] (Elect. Engg. Madras Univ. April, 1978) 3. A d.c. generator generates an e.m.f. of 520 V. It has 2,000 armature conductors, flux per pole of 0.013 Wb, speed of 1200 r.p.m. and the armature winding has four parallel paths. Find the number of poles. [4] (Elect. Technology, Aligarh Univ. 1978) When driven at 1000 r.p.m. with a flux per pole of 0.02 Wb, a d.c. generator has an e.m.f. of 200 V. If the speed is increased to 1100 r.p.m. and at the same time the flux per pole is reduced to 0.019 Wb per pole, [209 V] 4. what is then the induced…

How does a generator play a crucial role in a power generation system?

Please answer the question by showing step by step and explaining each step with details, please?  Especially, by explaining why you used that formula or calculations. Thanks in advance.   This question is related with electromechanical energy conversion (electrical electronic engineering).

(B) Select the correct answer for the alternatives given 1- A shunt generator supplies 445 A at 250 V. The resistances of shunt field and armature are 502 and 0.025 respectively. The voltage drop due to the armature resistance is a) 5V, b) 11.25V 2- No load current in a transformer c) 22.5V, d)25V a)-lags behind the voltage by about 75° c)--leads the voltage by about 75° b)-lags behind the voltage by about 15° c)-leads the voltage by about 15° 3-A 220V shunt motor develops a torque of 108 Nm at an armature current of 20 A. what is the developed torque when the armature current is 10 A? a) 81 Nm. b) 54 Nm. c) 216 N.m., d) 45 N.m 4- In transformer,the kVA at maximum efficiency is equal to full a) PL Peu b) [2 c) Peu Pl load kVA multiplied by P Peu 5-Which type of the transformers has parts of the winding is common to both the primary and secondary circuit? a) Power transformer c) Current transformer b) Auto-transformer. d) Matching transformer

Please help i want urjent answer i am waiting

A 230V shunt generator has an armature circuit resistance of 0.05 ohms and shunt field resistance of 57.5 ohms. When the generator operates at rated voltage it has a total core and mechanical losses of 1880W. At what load does the generator operate so as to achieve maximum efficiency?