What is the purpose of a starting relay? a. to start an electric motor b. to remove the starting winding or component from the circuit c. to protect the motor from starting overloads d. to prevent the motor from starting under heavy loads

Question

Want to see more full solutions like this?

Answer 1

Textbook Question

100%

Chapter 9, Problem 1RQ

What is the purpose of a starting relay?

a. to start an electric motor
b. to remove the starting winding or component from the circuit
c. to protect the motor from starting overloads
d. to prevent the motor from starting under heavy loads

Expert Solution & Answer

To determine

The correct option for the purpose of the starting relay.

Explanation of Solution

The given choices are,

a) to start an electric motor
b) to remove the starting winding or component from the circuit
c) to protect the motor from starting overloads
d) to prevent the motor from starting under heavy loads

The starting relay is the relay that operates on the principle of back emf. The starting relay is used with a starting winding of single phase motor. This relay control the starting winding, as the single phase motor operates a back emf is produced in the starting winding, this winding acts as the generator that produce back emf which further corresponds to the motor speed. Thus the starting relay is used to drop the starting winding as a predefined back emf is produced in the winding.

Thus, the use of starting relay is to remove the starting winding or component from the circuit.

Thus, the correct option is (b)

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

The 2-mass system shown below depicts a disk which rotates about its center and has rotational moment of inertia Jo and radius r. The angular displacement of the disk is given by 0. The spring with constant k₂ is attached to the disk at a distance from the center. The mass m has linear displacement & and is subject to an external force u. When the system is at equilibrium, the spring forces due to k₁ and k₂ are zero. Neglect gravity and aerodynamic drag in this problem. You may assume the small angle approximation which implies (i) that the springs and dampers remain in their horizontal / vertical configurations and (ii) that the linear displacement d of a point on the edge of the disk can be approximated by d≈re. Ө K2 www m 4 Cz 777777 Jo Make the following assumptions when analyzing the forces and torques: тв 2 0>0, 0>0, x> > 0, >0 Derive the differential equations of motion for this dynamic system. Start by sketching LARGE and carefully drawn free-body-diagrams for the disk and the…

A linear system is one that satisfies the principle of superposition. In other words, if an input u₁ yields the output y₁, and an input u2 yields the output y2, the system is said to be linear if a com- bination of the inputs u = u₁ + u2 yield the sum of the outputs y = y1 + y2. Using this fact, determine the output y(t) of the following linear system: given the input: P(s) = = Y(s) U(s) = s+1 s+10 u(t) = e−2+ sin(t) =e

The manometer fluid in the figure given below is mercury where D = 3 in and h = 1 in. Estimate the volume flow in the tube (ft3/s) if the flowing fluid is gasoline at 20°C and 1 atm. The density of mercury and gasoline are 26.34 slug/ft3 and 1.32 slug/ft3 respectively. The gravitational force is 32.2 ft/s2.

Answer 2

Textbook Question

100%

Chapter 9, Problem 1RQ

What is the purpose of a starting relay?

a. to start an electric motor
b. to remove the starting winding or component from the circuit
c. to protect the motor from starting overloads
d. to prevent the motor from starting under heavy loads

Expert Solution & Answer

To determine

The correct option for the purpose of the starting relay.

Explanation of Solution

The given choices are,

a) to start an electric motor
b) to remove the starting winding or component from the circuit
c) to protect the motor from starting overloads
d) to prevent the motor from starting under heavy loads

The starting relay is the relay that operates on the principle of back emf. The starting relay is used with a starting winding of single phase motor. This relay control the starting winding, as the single phase motor operates a back emf is produced in the starting winding, this winding acts as the generator that produce back emf which further corresponds to the motor speed. Thus the starting relay is used to drop the starting winding as a predefined back emf is produced in the winding.

Thus, the use of starting relay is to remove the starting winding or component from the circuit.

Thus, the correct option is (b)

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

Textbook Question

100%

Chapter 9, Problem 1RQ

What is the purpose of a starting relay?

a. to start an electric motor
b. to remove the starting winding or component from the circuit
c. to protect the motor from starting overloads
d. to prevent the motor from starting under heavy loads

Expert Solution & Answer

To determine

The correct option for the purpose of the starting relay.

Explanation of Solution

The given choices are,

a) to start an electric motor
b) to remove the starting winding or component from the circuit
c) to protect the motor from starting overloads
d) to prevent the motor from starting under heavy loads

The starting relay is the relay that operates on the principle of back emf. The starting relay is used with a starting winding of single phase motor. This relay control the starting winding, as the single phase motor operates a back emf is produced in the starting winding, this winding acts as the generator that produce back emf which further corresponds to the motor speed. Thus the starting relay is used to drop the starting winding as a predefined back emf is produced in the winding.

Thus, the use of starting relay is to remove the starting winding or component from the circuit.

Thus, the correct option is (b)

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

Textbook Question

100%

Chapter 9, Problem 1RQ

What is the purpose of a starting relay?

a. to start an electric motor
b. to remove the starting winding or component from the circuit
c. to protect the motor from starting overloads
d. to prevent the motor from starting under heavy loads

Expert Solution & Answer

To determine

The correct option for the purpose of the starting relay.

Explanation of Solution

The given choices are,

a) to start an electric motor
b) to remove the starting winding or component from the circuit
c) to protect the motor from starting overloads
d) to prevent the motor from starting under heavy loads

The starting relay is the relay that operates on the principle of back emf. The starting relay is used with a starting winding of single phase motor. This relay control the starting winding, as the single phase motor operates a back emf is produced in the starting winding, this winding acts as the generator that produce back emf which further corresponds to the motor speed. Thus the starting relay is used to drop the starting winding as a predefined back emf is produced in the winding.

Thus, the use of starting relay is to remove the starting winding or component from the circuit.

Thus, the correct option is (b)

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

Textbook Question

100%

Answer 6

Textbook Question

100%

Answer 7

Expert Solution & Answer

To determine

The correct option for the purpose of the starting relay.

Explanation of Solution

The given choices are,

a) to start an electric motor
b) to remove the starting winding or component from the circuit
c) to protect the motor from starting overloads
d) to prevent the motor from starting under heavy loads

The starting relay is the relay that operates on the principle of back emf. The starting relay is used with a starting winding of single phase motor. This relay control the starting winding, as the single phase motor operates a back emf is produced in the starting winding, this winding acts as the generator that produce back emf which further corresponds to the motor speed. Thus the starting relay is used to drop the starting winding as a predefined back emf is produced in the winding.

Thus, the use of starting relay is to remove the starting winding or component from the circuit.

Thus, the correct option is (b)

Answer 8

Expert Solution & Answer

To determine

The correct option for the purpose of the starting relay.

Explanation of Solution

The given choices are,

a) to start an electric motor
b) to remove the starting winding or component from the circuit
c) to protect the motor from starting overloads
d) to prevent the motor from starting under heavy loads

The starting relay is the relay that operates on the principle of back emf. The starting relay is used with a starting winding of single phase motor. This relay control the starting winding, as the single phase motor operates a back emf is produced in the starting winding, this winding acts as the generator that produce back emf which further corresponds to the motor speed. Thus the starting relay is used to drop the starting winding as a predefined back emf is produced in the winding.

Thus, the use of starting relay is to remove the starting winding or component from the circuit.

Thus, the correct option is (b)

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

To determine

The correct option for the purpose of the starting relay.

Answer 12

Explanation of Solution

The given choices are,

a) to start an electric motor
b) to remove the starting winding or component from the circuit
c) to protect the motor from starting overloads
d) to prevent the motor from starting under heavy loads

The starting relay is the relay that operates on the principle of back emf. The starting relay is used with a starting winding of single phase motor. This relay control the starting winding, as the single phase motor operates a back emf is produced in the starting winding, this winding acts as the generator that produce back emf which further corresponds to the motor speed. Thus the starting relay is used to drop the starting winding as a predefined back emf is produced in the winding.

Thus, the use of starting relay is to remove the starting winding or component from the circuit.

Thus, the correct option is (b)

Answer 13

Ch. 9 - What is the purpose of a starting relay? to start...Ch. 9 - Prob. 2RQ Ch. 9 - Prob. 12RQ

What is the purpose of a starting relay? a. to start an electric motor b. to remove the starting winding or component from the circuit c. to protect the motor from starting overloads d. to prevent the motor from starting under heavy loads

Concept explainers

Videos

Explanation of Solution

Want to see more full solutions like this?

Chapter 9 Solutions