Explain the necessity of mechanical brake after dynamic braking occurs.

Question

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Answer 1

Question

Chapter 50, Problem 1SQ

To determine

Explain the necessity of mechanical brake after dynamic braking occurs.

Expert Solution & Answer

Explanation of Solution

A motor cannot be completely stopped by applying the dynamic braking alone. In dynamic braking process, the DC motor acts as a generator by reconnecting the running motor, as a result the field gets excited and a low resistance path is created across the armature. Some of the mechanical energy of motor is converted to electrical energy resulting in the reduction of motor speed, current, generator action and the braking lessens. However, the motor does not attain complete stand-alone state due to dynamic braking, the mechanical brake is needed to stop and hold the drive at the final stage of braking.

Conclusion:

Thus, the necessity of the mechanical brake after dynamic braking occurs is explained.

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Pastner Brands is a calendar-year firm with operations in several countries. As part of its executive compensation plan, at January 1, 2024, the company issued 480,000 executive stock options permitting executives to buy 480,000 shares of Pastner stock for $38 per share. One-fourth of the options vest in each of the next four years beginning at December 31, 2024 (graded vesting). Pastner elects to separate the total award into four groups (or tranches) according to the year in which they vest and measures the compensation cost for each vesting date as a separate award. The fair value of each tranche is estimated at January 1, 2024, as follows: Vesting Date Amount Fair Value Vesting per Option: December 31, 2024 25% $ 3.90 December 31, 2025 25% $ 4.40 25% $ 4.90 25% $ 5.40 December 31, 2026 December 31, 2027 Required: 1. Determine the compensation expense related to the options to be recorded each year 2024-2027, assuming Pastner allocates the compensation cost for each of the four…

Answer 2

Question

Chapter 50, Problem 1SQ

To determine

Explain the necessity of mechanical brake after dynamic braking occurs.

Expert Solution & Answer

Explanation of Solution

A motor cannot be completely stopped by applying the dynamic braking alone. In dynamic braking process, the DC motor acts as a generator by reconnecting the running motor, as a result the field gets excited and a low resistance path is created across the armature. Some of the mechanical energy of motor is converted to electrical energy resulting in the reduction of motor speed, current, generator action and the braking lessens. However, the motor does not attain complete stand-alone state due to dynamic braking, the mechanical brake is needed to stop and hold the drive at the final stage of braking.

Conclusion:

Thus, the necessity of the mechanical brake after dynamic braking occurs is explained.

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Answer 3

Question

Chapter 50, Problem 1SQ

To determine

Explain the necessity of mechanical brake after dynamic braking occurs.

Expert Solution & Answer

Explanation of Solution

A motor cannot be completely stopped by applying the dynamic braking alone. In dynamic braking process, the DC motor acts as a generator by reconnecting the running motor, as a result the field gets excited and a low resistance path is created across the armature. Some of the mechanical energy of motor is converted to electrical energy resulting in the reduction of motor speed, current, generator action and the braking lessens. However, the motor does not attain complete stand-alone state due to dynamic braking, the mechanical brake is needed to stop and hold the drive at the final stage of braking.

Conclusion:

Thus, the necessity of the mechanical brake after dynamic braking occurs is explained.

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

Answer 4

Question

Chapter 50, Problem 1SQ

To determine

Explain the necessity of mechanical brake after dynamic braking occurs.

Expert Solution & Answer

Explanation of Solution

A motor cannot be completely stopped by applying the dynamic braking alone. In dynamic braking process, the DC motor acts as a generator by reconnecting the running motor, as a result the field gets excited and a low resistance path is created across the armature. Some of the mechanical energy of motor is converted to electrical energy resulting in the reduction of motor speed, current, generator action and the braking lessens. However, the motor does not attain complete stand-alone state due to dynamic braking, the mechanical brake is needed to stop and hold the drive at the final stage of braking.

Conclusion:

Thus, the necessity of the mechanical brake after dynamic braking occurs is explained.

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

Answer 5

Chapter 50, Problem 1SQ

To determine

Explain the necessity of mechanical brake after dynamic braking occurs.

Expert Solution & Answer

Explanation of Solution

A motor cannot be completely stopped by applying the dynamic braking alone. In dynamic braking process, the DC motor acts as a generator by reconnecting the running motor, as a result the field gets excited and a low resistance path is created across the armature. Some of the mechanical energy of motor is converted to electrical energy resulting in the reduction of motor speed, current, generator action and the braking lessens. However, the motor does not attain complete stand-alone state due to dynamic braking, the mechanical brake is needed to stop and hold the drive at the final stage of braking.

Conclusion:

Thus, the necessity of the mechanical brake after dynamic braking occurs is explained.

Answer 6

Chapter 50, Problem 1SQ

To determine

Explain the necessity of mechanical brake after dynamic braking occurs.

Expert Solution & Answer

Explanation of Solution

A motor cannot be completely stopped by applying the dynamic braking alone. In dynamic braking process, the DC motor acts as a generator by reconnecting the running motor, as a result the field gets excited and a low resistance path is created across the armature. Some of the mechanical energy of motor is converted to electrical energy resulting in the reduction of motor speed, current, generator action and the braking lessens. However, the motor does not attain complete stand-alone state due to dynamic braking, the mechanical brake is needed to stop and hold the drive at the final stage of braking.

Conclusion:

Thus, the necessity of the mechanical brake after dynamic braking occurs is explained.

Answer 7

Chapter 50, Problem 1SQ

To determine

Explain the necessity of mechanical brake after dynamic braking occurs.

Answer 8

Expert Solution & Answer

Explanation of Solution

A motor cannot be completely stopped by applying the dynamic braking alone. In dynamic braking process, the DC motor acts as a generator by reconnecting the running motor, as a result the field gets excited and a low resistance path is created across the armature. Some of the mechanical energy of motor is converted to electrical energy resulting in the reduction of motor speed, current, generator action and the braking lessens. However, the motor does not attain complete stand-alone state due to dynamic braking, the mechanical brake is needed to stop and hold the drive at the final stage of braking.

Conclusion:

Thus, the necessity of the mechanical brake after dynamic braking occurs is explained.