How do we control the induced voltage of a shunt generator? Draw the equivalent circuit to...
How do we control the induced voltage of a shunt generator? Draw the equivalent circuit to explain.
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How do we control the induced voltage of a shunt generator? Draw
the equivalent circuit to...
How do we control the induced voltage of a shunt generator? Draw the equivalent circuit to...
How do we control the induced voltage of a shunt generator? Draw the equivalent circuit to explain.
1. A shunt machine, while running as a generator, has an induced voltage of 260 V...
1. A shunt machine, while running as a generator, has an induced voltage of 260 V at 1200 rpm. Its armature and field resistances are 0.2 2 and 110 Q, respectively. If the machine is run as a shunt motor, it takes 4 A at 220 V (i) Draw the schematic diagram of the machine as a generator. (ii) Draw the schematic diagram of the machine as a motor (iii)At a certain load the motor takes 30 A at 220...
7. Draw the equivalent circuit of the shunt type dc motor and obtain the speed torque...
7. Draw the equivalent circuit of the shunt type dc motor and obtain the speed torque characteristic equation. Also explain that the dc motor operates stably at all speeds.
A DC shunt generator delivers a load current of 50 A at 300 V with its...
A DC shunt generator delivers a load current of 50 A at 300 V with its field circuit resistance being 50 ohms. The armature circuit resistance of the generator is 2 ohms The generator has a linear excitation with a constant rotor speed. The brush voltage drop is negligible. Aiding with a drawing of equivalent circuit, estimate: i) The field current, armature current and generated voltage of the generator when it delivers the 100 A at 300V; and (ii) The...
ing the arhature voltage (with the shunt field voltage held constant) offer a good method of...
ing the arhature voltage (with the shunt field voltage held constant) offer a good method of speed control? □Yes □No REVIEW QUESTIONS 1. Explain how to locate the neutral brush position in a DC motor. Would the motor turn if only the armature were excited (had voltage applied across it)? 2. □ Yes □ No 3. Why is it dangerous to supply power to an unloaded series connected DC motor? 4. In what two ways may the rotation of a...
Give three reasons for the drop in voltage of the Shunt Generator with increasing load??
Give three reasons for the drop in voltage of the Shunt Generator with increasing load??
A short shunt compound generator supplies 50kW at 230V. The shunt field, series field and armature...
A short shunt compound generator supplies 50kW at 230V. The shunt field, series field and armature circuit resistances are 46 ohms, 0.02ohms and 0.01ohms respectively. The brush contact drop is 2V. Determine the percent voltage regulation. 3.73% b. 4.55% c. 3.88% d. 3.72% A DC series generator supplies a load of resistance of 1.4 ohms through a pair of feeder conductors of total resistance of 0.1ohms . The voltage at the DC generator terminal is 120 V. What is pd...
3. A 20kW, 250V, 1000rpm shunt excited dc motor has armature and field resistances of 0.2...
3. A 20kW, 250V, 1000rpm shunt excited dc motor has armature and field resistances of 0.2 ohm and 2002. When the motor takes 80A rated current at rated conditions. Draw the equivalent circuit and calculate induced torque at 1200rpm. Explain the starting current limiting methods for DC motors. (30 pts) 4. Explain the conditions for parallel operation of synchronous generators. A three phase, wye connected, synchronous generator is rated 150 MW, 0.85 lagging power factor, 12.6 kV, 60 Hz, and...
for the same black box circuit how do we measure the output voltage to calculate the gain because the input voltage is 1...
for
the same black box circuit how do we measure the output voltage to
calculate the gain because the input voltage is 12V and which
values should we set for the frequency is it Hz or kHz
this is the question and
i kniw hot to connect the circuit to the oscilloscope and signal
generator but im not sure what frequency values to set on the
signal generator and also i dont know how to get the gain from the...
QUESTION 1 A) (10 marks) A 10 kW, 250 V DC self-excited shunt generator, with an...
QUESTION 1 A) (10 marks) A 10 kW, 250 V DC self-excited shunt generator, with an armature resistance of 0.1 ohm, is delivering 80 % of rated power to the mains at rated voltage when being run at 1000 r.p.m. (revolutions per minute). The field circuit resistance is 220 ohms. The brush contact drop is 0.5 V and rotational (mechanical) losses are 750 W Calculate The induced voltage The electromagnetic torque developed The shaft torque The overall efficiency B) (15...
1. A shunt machine, while running as a generator, has an induced voltage of 260 V at 1200 rpm. Its armature and field resistances are 0.2 2 and 110 Q, respectively. If the machine is run as a shunt motor, it takes 4 A at 220 V (i) Draw the schematic diagram of the machine as a generator. (ii) Draw the schematic diagram of the machine as a motor (iii)At a certain load the motor takes 30 A at 220...
A DC shunt generator delivers a load current of 50 A at 300 V with its field circuit resistance being 50 ohms. The armature circuit resistance of the generator is 2 ohms The generator has a linear excitation with a constant rotor speed. The brush voltage drop is negligible. Aiding with a drawing of equivalent circuit, estimate: i) The field current, armature current and generated voltage of the generator when it delivers the 100 A at 300V; and (ii) The...
ing the arhature voltage (with the shunt field voltage held constant) offer a good method of speed control? □Yes □No REVIEW QUESTIONS 1. Explain how to locate the neutral brush position in a DC motor. Would the motor turn if only the armature were excited (had voltage applied across it)? 2. □ Yes □ No 3. Why is it dangerous to supply power to an unloaded series connected DC motor? 4. In what two ways may the rotation of a...
3. A 20kW, 250V, 1000rpm shunt excited dc motor has armature and field resistances of 0.2 ohm and 2002. When the motor takes 80A rated current at rated conditions. Draw the equivalent circuit and calculate induced torque at 1200rpm. Explain the starting current limiting methods for DC motors. (30 pts) 4. Explain the conditions for parallel operation of synchronous generators. A three phase, wye connected, synchronous generator is rated 150 MW, 0.85 lagging power factor, 12.6 kV, 60 Hz, and...
for
the same black box circuit how do we measure the output voltage to
calculate the gain because the input voltage is 12V and which
values should we set for the frequency is it Hz or kHz
this is the question and
i kniw hot to connect the circuit to the oscilloscope and signal
generator but im not sure what frequency values to set on the
signal generator and also i dont know how to get the gain from the...
QUESTION 1 A) (10 marks) A 10 kW, 250 V DC self-excited shunt generator, with an armature resistance of 0.1 ohm, is delivering 80 % of rated power to the mains at rated voltage when being run at 1000 r.p.m. (revolutions per minute). The field circuit resistance is 220 ohms. The brush contact drop is 0.5 V and rotational (mechanical) losses are 750 W Calculate The induced voltage The electromagnetic torque developed The shaft torque The overall efficiency B) (15...
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