1)What will happen to your motor when power is applied if springs twice as stiff are...
1)What will happen to your motor when power is applied if springs twice as stiff are used on the centrifugal switch?
2)If the running winding and the auxiliary winding were connected in series, would the motor turn? Explain
3)Does the speed of a split-phase motor change appreciably with a change in the applied voltage?
Homework Answers
Add Answer to:
1)What will happen to your motor when power is applied if
springs twice as stiff are...
true or false 11. the speed of a synchronous motor does not decrease with an increase...
true or false 11. the speed of a synchronous motor does not decrease with an increase in mechanical output. 12. selsyn motors are selective synchronous motors. the capacitor-start, induction-run motor interchange the connections of the leads to the polarized starting capacitor. 14. to reverse direction of rotation of a capacitor-start induction-run motor interchange the connections of the leads to the polarized starting capacitor. 15. the centrifugal switch contacts will close when a motor gets close to it's normal operating speed....
3. A 25-kW, 230-V shunt motor has an armature resistance of 0.064 Ω and a field-circuit...
3. A 25-kW, 230-V shunt motor has an armature resistance of 0.064 Ω and a field-circuit resistance of 95 Ω. The motor delivers rated output power at rated voltage when its armature current is 122 A. When the motor is operating at rated voltage, the speed is observed to be 1150 r/min when the machine is loaded such that the armature current is 69.5 A a. Calculate the rated-load speed of this motor In order to protect both the motor...
In this part of the term paper, design a single-phase switch-mode DC power supply with a forward ...
In this part of the term paper, design a single-phase switch-mode DC power supply with a forward converter. Provide answers to the questions below Please combine the single-phase full-wave rectifier from part two of your term paper with a forward converter to produce a switch-mode DC power supply, as shown below. The output of the bridge rectifier serves as input to the forward converter L1 Np: N BH621BH62 D, V1 Load C1 100p 45 Vrms D3 BH62 18H62 D4 Control...
Open/short circuit of star connected motor question help
Question: The equivalent circuit parameters of a 440 V, 3-phase, 8-poles, and 50 Hz star connected motor are given below. The short-circuit test is conducted with a locked rotor and a line current of 80 A. The open-circuit test is conducted by supplying the stator winding at rated voltage and at the same time driving the rotor in the same direction as the rotating field, at synchronous speed; s=0.R1 = 0.1, X1 = 0.5, RI2 = 0.1, XI2 = 0.5,...
A 3-phase, 600 kVA, 600 V, 60 Hz, 16 pole, Y-connected, round rotor synchronous motor has...
A 3-phase, 600 kVA, 600 V, 60 Hz, 16 pole, Y-connected, round rotor synchronous motor has Xs = 0.492 22 and a negligible armature resistance. The motor is supplied from a 589V infinity bus, and draws 520 kW of real power at a 0.9 leading power factor. Its mechanical loss at the synchronous speed is 20 kW and the core loss is 15 kW. a) [7 marks] Calculate the generated voltage Ef , the load angel 8, and the efficiency...
The equivalent circuit parameters of a 440 V, 3-phase, 8-poles, and 50 Hz star connected motor (HELP)
Question: The equivalent circuit parameters of a 440 V, 3-phase, 8-poles, and 50 Hz star connected motor are given below. The short-circuit test is conducted with a locked rotor and a line current of 80 A. The open-circuit test is conducted by supplying the stator winding at rated voltage and at the same time driving the rotor in the same direction as the rotating field, at synchronous speed; s=0.R1 = 0.1, X1 = 0.5, RI2 = 0.1, XI2 = 0.5, Xm = 20, Rm = 100...
(might be 1 or 2, MCQ questions were having images given with them, which we couldn't...
(might be 1 or 2, MCQ questions were having images given with them, which we couldn't insert, so ignore those questions if you cannot answer, sorry for inconveinience created, i tried to delete them but might be couldn't done all) 3) Single phase induction motors work because: a) The oscillating magnetic field can induce starting torque in a rotor. b) The oscillating magnetic field can induce running torque in a rotor. c) A capacitance or inductance can create the phase...
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...
1. A typical motor speed control circuit that is controlled by an analog current loop will...
1. A typical motor speed control circuit that is controlled by an analog current loop will have a current of A. 2-20 mA B. 5-50 mA C. 0-10 mA D. 4-20 mA. 2. What is the purpose of thermostat number 2, IN7, in the mixing vat machine? A. This thermostat is used to prevent an over-temperature condition in the event thermostat one sticks open. B. This thermostat is used to shut off the heater when the chemical mix reaches setpoint...
A certain circuit consists of three resistors connected in parallel across 200V mains. The rate of...
A certain circuit consists of three resistors connected in parallel across 200V mains. The rate of production of heat in them is in the ratio of 5:3:2 and together they generate heat at the rate of 1 kWh in 2 h. Find the power used if the three resistances are connected in series across 248V mains. A 3-phase six pole, 60 hz, 230-V wound rotor motor has its stator connected in delta and its rotor connected in wye. The stator...
3. A 25-kW, 230-V shunt motor has an armature resistance of 0.064 Ω and a field-circuit resistance of 95 Ω. The motor delivers rated output power at rated voltage when its armature current is 122 A. When the motor is operating at rated voltage, the speed is observed to be 1150 r/min when the machine is loaded such that the armature current is 69.5 A a. Calculate the rated-load speed of this motor In order to protect both the motor...
In this part of the term paper, design a single-phase switch-mode DC power supply with a forward converter. Provide answers to the questions below Please combine the single-phase full-wave rectifier from part two of your term paper with a forward converter to produce a switch-mode DC power supply, as shown below. The output of the bridge rectifier serves as input to the forward converter L1 Np: N BH621BH62 D, V1 Load C1 100p 45 Vrms D3 BH62 18H62 D4 Control...
A 3-phase, 600 kVA, 600 V, 60 Hz, 16 pole, Y-connected, round rotor synchronous motor has Xs = 0.492 22 and a negligible armature resistance. The motor is supplied from a 589V infinity bus, and draws 520 kW of real power at a 0.9 leading power factor. Its mechanical loss at the synchronous speed is 20 kW and the core loss is 15 kW. a) [7 marks] Calculate the generated voltage Ef , the load angel 8, and the efficiency...
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...
1. A typical motor speed control circuit that is controlled by an analog current loop will have a current of A. 2-20 mA B. 5-50 mA C. 0-10 mA D. 4-20 mA. 2. What is the purpose of thermostat number 2, IN7, in the mixing vat machine? A. This thermostat is used to prevent an over-temperature condition in the event thermostat one sticks open. B. This thermostat is used to shut off the heater when the chemical mix reaches setpoint...
Most questions answered within 3 hours.
-
Assume Kw = 1.01 ✕ 10−14
For pure water, we can calculate [H3O+ ] = [OH...
asked 20 minutes ago -
Suppose that on a temperature scale X, water boils at 203.0°X
and freezes at -105.7°X. What...
asked 1 hour ago -
BaS crystallizes in a cubic unit cell with S2- ions on each
corner and each face....
asked 1 hour ago -
A. 0≤P(Oi)≤10≤P(Oi)≤1 for each i
B. P(Oi)≤0P(Oi)≤0
C. P(Oi)=1+P(OCi)P(Oi)=1+P(OiC)
D. P(Oi)≥1P(Oi)≥1
If an experiment consists of...
asked 3 hours ago -
A battery has an emf of 9.20V and an internal resistance of 1.20
ohm. a)What resistance...
asked 3 hours ago -
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 4 hours ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 5 hours ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 5 hours ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 5 hours ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 6 hours ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 6 hours ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 6 hours ago