Suppose you have a motor with a power factor significantly less than 1. Explain why it would be better to improve the power factor as a method of improving the motor’s output, rather than to increase the voltage input.

Q: The diagrams show three circuits with identical batteries, identical inductors, and identical…

A: Let each resistance is R . Let voltage of each battery is V .

Q: Which part of the D.C motor is used to change the direction of current after a half cycle? a. Loop…

A: Here we have to find out that what can be used to change the direction of the current in half cycle.…

Q: A technician wearing a brass bracelet enclosing area 0.00500 m places her hand in a solenoid whose…

A: A technician wearing a brass bracelet enclosing area 0.00500 m2 places her hand in a solenoid whose…

Q: When the current through an inductor is decreasing at a constant rate of 0.3 A/s, the magnitude of…

A: rate of decrease of current(didt )=-0.3A/s Magnitude of induced EMF= 6 V Electric current I= 5A

Q: The charger for your cell phone contains a small transformer. While charging, it provides 5.0 W to…

A:

Q: Which of the following rule is used to determine the direction of rotation of the coil of the D.C…

A: The direction of rotation of the coil in dc motor

Q: What law considered as a working principle of the most of the electrical motors, generators,…

A: electrical motors and generators are the devices which are used to mainly convert electrical energy…

Q: Which part of the D.C motor is used to change the direction of current after a half cycle? O a.…

A:

Q: Why Hysteresis Losses of DC motor is constant?   a. It does not depends on load current b. none…

A: Why Hysteresis Losses of DC motor is constant?a. It does not depends on load current b. none of the…

Q: A linear dc machine has a magnetic flux density B=1.2T directed out of the page, a resistance R=0.50…

A: Solution: given that B = 1.2 T V = 30 V R = 0.5 ohm

Q: Which of the following rule is used to determine the direction of rotation of the coil of the D.C…

A: Right hand rule gives the direction of motion of coil.

Q: Which particular part of a the motor you can use to identify a "AC motor"? O a. Magnetic poles O b.…

A:

Q: by how much is the maxium electromotive force produced by a generator changfe if its angular…

A: To determine: The correct option.

Q: A 120-V, series-wound dc motor draws 0.50 A from its power source when operating at full speed, and…

A:

Q: Explain the parallel and series form of Inductors?

A: InductanceL is defined as the tendency of the conductor to oppose the change in the electric current…

Q: For the following DC motor, in what direction will the loop spin? The loop will spin…

A:

Q: State two disimilarities and two similarities between a dc motor and an ac generator.

A: dc motor and an ac generator have electromagnets and armature etc. and the external circuit of both…

Q: Suppose you find that the belt drive connecting a powerful motor to an air conditioning unit is…

A: Consider a powerful motor that is in a working condition, which results in drawing some power and…

Q: 18. För an a.c generator of maximum value 100 volt, the av quarter or a half cycle equal .. Volt..…

A:

Q: Why can we not use a transformer on a DC circuit?

A: Transformers work on the principle of mutual induction.

Q: In a generator, what are the carbon brushes used for?

A: Use of carbon brushes in a generator

Q: The sketches below show a circular coil and a permanent magnet; the arrows indicate both the…

A:

Q: Upon which one or more of the following does the magnetic energy of a coil that carries a current…

A: The strength or intensity of a coils magnetic field depends on the following factors. The number of…

Q: A bicycle generator rotates at 1,975 rad/s, producing a 17.5 V peak emf. It has a 46-turn, 1.00 by…

A:

Q: Which part of the D.C motor is used to change the direction of aurrent after a half cyc O a. Loop or…

A: Required : Which part of the DC motor is used to change the direction of the current after a half…

Q: Which of the following represents the variation of current and inductance of inductor? D O a. A O b.…

A:

Q: A simple AC generator consists of 10 turns of coils with an area of 1 000 cm2. It rotates at a…

A: Concept used is rate of change of magnetic flux gives emf in coil

Q: The image below shows a simple version of an alternator which is a system that can produce an emf.…

A:

Q: The wound rotor starting method is one of the starting methods of the slip ring induction motor.…

A:

Q: How does increasing the number of loops strengthen the magnitude of the induced EMF or electromotive…

A: The induced EMF is produced due to change in magnetic flux passing through any loop. The EMF will be…

Q: Which of the following rule is used to determine the direction of rotation of the coil of the D.C…

A: The DC motor is rotating

Q: In a homopolar motor (like Faraday’s motor), what happens to the motion if the current is reversed?

A: A Homopolar motor  is a direct current electric motor with two magnetic poles .The name Homopolar…

Q: The image below shows a simple version of an alternator which is a system that can produce an emf.…

A:

Q: Which part of a motor can be used to identify a "DC motor"? O a. Split rings O b. slip rings Loop or…

A: Slip ring are used to identify " DC motor "