What are the five commonly used starting methods for the motors.

Question

Want to see more full solutions like this?

Answer 1

Question

Chapter 25, Problem 1SQ

To determine

What are the five commonly used starting methods for the motors.

Expert Solution & Answer

Explanation of Solution

Generally, the polyphase induction motor is a self-starting motor. The commonly used starting methods for a polyphase squirrel cage induction motor are as follows:

1. Full-voltage starting:
An automatic starting or hand-operated switch is connected to the motor directly across the line.
2. Primary-resistance starting:
A resistance unit is connected in series with a stator to reduce the starting current.
3. Autotransformer or compensator starting:
Low voltage starting is applied by performing an automatic or manual switching between the taps of an autotransformer.
4. Impedance starting:
A reactor is connected in series with a motor to reduce the starting voltage.
5. Star-delta starting:
To get the reduced starting voltage, a stator is connected in star connection for starting and delta connection for running condition.

Conclusion:

Thus, the commonly used starting methods for a polyphase squirrel cage induction motor are listed.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

Given the logic function F(A,B,C,D) = Σm(1,2,3,4,9,10,11,12) (i) Write the truth table of the logic function. (ii) Use the Karnaugh-map method to find the simplest sum-of-products (SOP) expression of function F. (iii) Implement the minimized function with NAND gates only. (iv) Show that the Boolean function F can be constructed using exclusive-OR gates (v) Express the same logic function in a product-of-sums (POS) form. (vi) Simplify your function in product-of-sums (POS). (vii) Use a decoder with external AND gates only to implement F in its product-of- sums (POS) form (assume AND gates with any number of inputs are available). Note: You can use NAND gates with any number of inputs you may need. Assume, as well, that the input variables are available in both true and complemented form.

Problem A medical research facility is developing a proton accelerator for cancer treatment using proton therapy. The accelerator is designed to generate a beam of protons that precisely targets and destroys cancerous cells while minimizing damage to surrounding healthy tissue. However, there is an issue with the beam trajectory, which deviates from the intended direction when subjected to electric and magnetic fields. A team of engineers has been assigned to diagnose and resolve this issue. -The accelerator generates a beam of 10" protons with an initial velocity of v = 3 × 10° m/s in the y-axis direction. -An electric field of E = 200 kV/m is applied in the negative z-axis using a set of electrodes. -A magnetic field of B = 0.1T is applied along the z-axis using a solenoid to redirect the protons. - However, the beam does not align with the expected trajectory, indicating an error in field configuration or an unaccounted force acting on the protons. Answer the following questions 1.…

Design a synchronous binary up-counter using 4 negative edge-triggered JK flip-flops provided with a clock. The states (sequences) 1100, 1001 and 1000 are considered as unused states. (i) Draw the state diagram of the counter. (ii) Build the counter's state table showing the synchronous inputs of the JK flip- flops as well. (iii) Using Karnaugh-maps, find the minimal sum-of-products (SOP) form of the equations for the inputs to the flip-flops; assume the next states of the unused combinations to be "don't care states”. (iv) Draw the logic circuit of the counter.

Answer 2

Question

Chapter 25, Problem 1SQ

To determine

What are the five commonly used starting methods for the motors.

Expert Solution & Answer

Explanation of Solution

Generally, the polyphase induction motor is a self-starting motor. The commonly used starting methods for a polyphase squirrel cage induction motor are as follows:

1. Full-voltage starting:
An automatic starting or hand-operated switch is connected to the motor directly across the line.
2. Primary-resistance starting:
A resistance unit is connected in series with a stator to reduce the starting current.
3. Autotransformer or compensator starting:
Low voltage starting is applied by performing an automatic or manual switching between the taps of an autotransformer.
4. Impedance starting:
A reactor is connected in series with a motor to reduce the starting voltage.
5. Star-delta starting:
To get the reduced starting voltage, a stator is connected in star connection for starting and delta connection for running condition.

Conclusion:

Thus, the commonly used starting methods for a polyphase squirrel cage induction motor are listed.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Chapter 25, Problem 1SQ

To determine

What are the five commonly used starting methods for the motors.

Expert Solution & Answer

Explanation of Solution

Generally, the polyphase induction motor is a self-starting motor. The commonly used starting methods for a polyphase squirrel cage induction motor are as follows:

1. Full-voltage starting:
An automatic starting or hand-operated switch is connected to the motor directly across the line.
2. Primary-resistance starting:
A resistance unit is connected in series with a stator to reduce the starting current.
3. Autotransformer or compensator starting:
Low voltage starting is applied by performing an automatic or manual switching between the taps of an autotransformer.
4. Impedance starting:
A reactor is connected in series with a motor to reduce the starting voltage.
5. Star-delta starting:
To get the reduced starting voltage, a stator is connected in star connection for starting and delta connection for running condition.

Conclusion:

Thus, the commonly used starting methods for a polyphase squirrel cage induction motor are listed.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 25, Problem 1SQ

To determine

What are the five commonly used starting methods for the motors.

Expert Solution & Answer

Explanation of Solution

Generally, the polyphase induction motor is a self-starting motor. The commonly used starting methods for a polyphase squirrel cage induction motor are as follows:

1. Full-voltage starting:
An automatic starting or hand-operated switch is connected to the motor directly across the line.
2. Primary-resistance starting:
A resistance unit is connected in series with a stator to reduce the starting current.
3. Autotransformer or compensator starting:
Low voltage starting is applied by performing an automatic or manual switching between the taps of an autotransformer.
4. Impedance starting:
A reactor is connected in series with a motor to reduce the starting voltage.
5. Star-delta starting:
To get the reduced starting voltage, a stator is connected in star connection for starting and delta connection for running condition.

Conclusion:

Thus, the commonly used starting methods for a polyphase squirrel cage induction motor are listed.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 25, Problem 1SQ

To determine

What are the five commonly used starting methods for the motors.

Expert Solution & Answer

Explanation of Solution

Generally, the polyphase induction motor is a self-starting motor. The commonly used starting methods for a polyphase squirrel cage induction motor are as follows:

1. Full-voltage starting:
An automatic starting or hand-operated switch is connected to the motor directly across the line.
2. Primary-resistance starting:
A resistance unit is connected in series with a stator to reduce the starting current.
3. Autotransformer or compensator starting:
Low voltage starting is applied by performing an automatic or manual switching between the taps of an autotransformer.
4. Impedance starting:
A reactor is connected in series with a motor to reduce the starting voltage.
5. Star-delta starting:
To get the reduced starting voltage, a stator is connected in star connection for starting and delta connection for running condition.

Conclusion:

Thus, the commonly used starting methods for a polyphase squirrel cage induction motor are listed.

Answer 6

Chapter 25, Problem 1SQ

To determine

What are the five commonly used starting methods for the motors.

Expert Solution & Answer

Explanation of Solution

Generally, the polyphase induction motor is a self-starting motor. The commonly used starting methods for a polyphase squirrel cage induction motor are as follows:

1. Full-voltage starting:
An automatic starting or hand-operated switch is connected to the motor directly across the line.
2. Primary-resistance starting:
A resistance unit is connected in series with a stator to reduce the starting current.
3. Autotransformer or compensator starting:
Low voltage starting is applied by performing an automatic or manual switching between the taps of an autotransformer.
4. Impedance starting:
A reactor is connected in series with a motor to reduce the starting voltage.
5. Star-delta starting:
To get the reduced starting voltage, a stator is connected in star connection for starting and delta connection for running condition.

Conclusion:

Thus, the commonly used starting methods for a polyphase squirrel cage induction motor are listed.

Answer 7

Chapter 25, Problem 1SQ

To determine

What are the five commonly used starting methods for the motors.

Answer 8

Expert Solution & Answer

Explanation of Solution

Generally, the polyphase induction motor is a self-starting motor. The commonly used starting methods for a polyphase squirrel cage induction motor are as follows:

1. Full-voltage starting:
An automatic starting or hand-operated switch is connected to the motor directly across the line.
2. Primary-resistance starting:
A resistance unit is connected in series with a stator to reduce the starting current.
3. Autotransformer or compensator starting:
Low voltage starting is applied by performing an automatic or manual switching between the taps of an autotransformer.
4. Impedance starting:
A reactor is connected in series with a motor to reduce the starting voltage.
5. Star-delta starting:
To get the reduced starting voltage, a stator is connected in star connection for starting and delta connection for running condition.