What components in an electrodynamometer-type meter  movement produce the magnetic field?

1 Answer

Answer :

Fixed coils.

Related questions

Description : What components in an electrodynamometer-type meter movement produce the magnetic field?

Last Answer : Fixed coils.

Description : What is the limiting factor as to the amount of current an electrodynamometer meter movement can handle?

Last Answer : Size of spiral conducting.

Description : What is the limiting factor as to the amount of current an electrodynamometer meter movement can handle?

Last Answer : Size of spiral conducting.

Description : What is the primary advantage of the electrodynamometer type meter over the D’Arsonval-type meter?

Last Answer : The electrodynamometer-type meter can be used to measure both ac and dc currents.

Description : What is the primary advantage of the electrodynamometer type meter over the D’Arsonval-type meter?

Last Answer : The electrodynamometer-type meter can be used to measure both ac and dc currents.

Description : Which of the following electric meter movements uses a stationary permanent magnet and movable coil? A. D'Arsonval B. Electrodynamometer C. Moving iron-vane D. Inclined coil iron-vane

Last Answer : Answer: A

Description : The basis of the technique of chromatography for separating components of a mixture is? A. the differing movement of particles of different mass in an electrical field B. the interaction of the ... infrared radiation by the components. D. the deflection of charged particles in a magnetic field. 

Last Answer : the interaction of the components with a stationary and a mobile phases

Description : What type of meter movement reacts to voltage rather than current?

Last Answer : Electrostatic.

Description : What type of meter movement is the d’Arsonval meter movement?

Last Answer : A permanent-magnet moving-coil meter movement used in most electrical and electronic meters.

Description : (True or False) The larger the current required to produce full-scale deflection of the meter coil, the better the sensitivity of the meter.

Last Answer : False.

Description : Explain the error occurred due to pressure coil inductance of electrodynamometer type wattmeter. How this error is compensated?

Last Answer : For power measurement assume that the pressure coil of wattmeter is purely restitive. Hence current taken by pressure coil Ipc is in phase with voltage across the pressure coil Vpc  ... inductive reactance XL the pressure coil circuit is made purely resistive and the error is eliminated.

Description : Explain construction & working of electrodynamometer type wattmeter.

Last Answer : Electrodynamometer Type Wattmeter:  Construction: It essentially consists of the fixed and moving coil. The fixed coil is split into two equal parts which are placed close together and parallel to each other. ... hence these instruments can be used for measurement of A.C. & D.C. power.

Description : What is the only use for the voltage sensitive meter movement?

Last Answer : High-voltage measurement.

Description : How is it possible to use a current sensitive meter movement to measure voltage?

Last Answer : Since the resistance of a meter movement remains the same as the pointer is deflected, the amount of current through the movement is proportional to the voltage applied. Therefore, only the scale of the movement must be changed.

Description : What value does a meter movement react to (actually measure) when measuring ac?

Last Answer : Average value.

Description : What are two methods used to damp a meter movement?

Last Answer : As the coil moves through the field of the permanent magnet, a current is induced in the coil opposing the movement of the coil; and a vane can be attached to the coil and placed in the airtight chamber so that the movement of the vane opposes the movement of the coil.

Description : How can a d’Arsonval meter movement be adapted for use as an ac meter?

Last Answer : By the use of a rectifier

Description : What are three functions of the hairsprings in a d’Arsonval meter movement?

Last Answer : To return the pointer to its rest position when there is no current flow; to oppose the coil movement when there is current flow; to provide electrical connections for the coil.

Description : What is the effect of current flow through the coil in a d’Arsonval meter movement?

Last Answer : A magnetic field is generated around the coil and the attraction of this field with the permanent magnet causes the coil to move

Description : What modification is made to the D’Arsonval meter movement to enable the meter to measure voltage?

Last Answer : A multimeter (high resistance) is placed in series with the coil of the meter.

Description : What structurally large, low-resistance conductor is connected in parallel with the meter movement to prevent damage?

Last Answer : Shunt.

Description : What advantage is gained by using pole pieces with curved faces in the D’Arsonval meter movement?

Last Answer : Two-position and three-position.

Description : What component supplies restoring force to the coil of the D’Arsonval meter movement?

Last Answer : Hairspring.

Description : What component of the D’Arsonval meter movement completes the circuit for current flow to the coil?

Last Answer : Hairspring.

Description : At what point on a meter movement are the most accurate readings taken?

Last Answer : Midscale.

Description : What the three basic components make up the typical magnetic amplifier?

Last Answer : Two saturable reactors and a transformer.

Description : When is an optical power meter measurement recommended for conducting field measurements on installed optical fiber cables or cable plants?

Last Answer : When an installed optical fiber cable or cable plant is less than 50 meters in length.

Description : Type of power-line frequency meter composed of vibrating iron reed placed in alternating magnetic field

Last Answer : Vibrating Reed Type

Description : On meter length of wires carriers a constant current. The wire is bent to from a circular loop. The magnetic field at the centre of this loop is `B`.

Last Answer : On meter length of wires carriers a constant current. The wire is bent to from a circular loop. The magnetic field at ... B. `4B` C. `B/4` D. `16B`

Description : What field configuration is easiest to produce in a given waveguide?

Last Answer : . Dominant mode

Description : When the magnetic field of the inductor is completely collapsed, where is the energy of the tank circuit stored?

Last Answer : . Capacitor.

Description : What is the effect on magnetron operation if the magnetic field strength is too high?

Last Answer : The magnetron will not oscillate.

Description : What is the effect on magnetron operation if the magnetic field strength is too high?

Last Answer : The magnetron will not oscillate.

Description : What can exposure to a magnetic field do to the data on a disk?

Last Answer : Destroy some or all of it.

Description : How should a delicate instrument be protected from a magnetic field?

Last Answer : By shielding or surrounding the instrument with a soft iron case, called a magnetic shield or screen.

Description : If the amount of current in the conductor changes, what happens to the magnetic field around the conductor?

Last Answer : If the current increases the magnetic field increases; if the current decreases the magnetic field decreases.

Description : What is the mathematical formula for computing the output voltage from a moving coil in a magnetic field?

Last Answer : 8. e = Emax sine θ.

Description : What determines the number of field poles required to establish a rotating magnetic field in a multiphase motor stator?

Last Answer : The number of phases in the applied voltage.

Description : If the velocity of charged particle has both perpendicular and parallel components while moving through a magnetic field ,then what is the path follow

Last Answer : If the velocity of charged particle has both perpendicular and parallel components while moving through a ... B. Ellipatical C. Linear D. Helical

Description : The electric and magnetic field components in the electromagnetic wave propagation are in phase. State True/False. a) True b) False

Last Answer : a) True

Description : Biot-Savart law indicates that the moving electrons (velocity `vecv` ) produce a magnetic field `vecB` such that

Last Answer : Biot-Savart law indicates that the moving electrons (velocity `vecv` ) produce a magnetic ... line joining the electron and point of observation

Description : How do you produce a uniform magnetic field using a solenoid?

Last Answer : What is the answer ?

Description : The primary function of an electric motor is to ___________. A. develop torque B. generate high voltages C. produce a magnetic field D. generate high electrical resistance

Last Answer : Answer: A

Description : Particle nature of cathode rays is proved due to the fact that they (A) Travel in a straight line (B) Get deflected by magnetic electric field (C) Produce fluorescence (D) Heat the exposed material

Last Answer : Option B

Description : In a heterodyne-type frequency meter, what is the difference between the oscillator frequency and the unknown frequency?

Last Answer : Beat frequency.

Description : What type of frequency meter is shown and what is the value indicated for each meter in figure 1-52?

Last Answer : A) Vibrating-reed, 60Hz. (B) Moving-disk, 58 Hz.

Description : What type of meter is shown and what is the value of the quantity being measured for each meter in figure 1-51?

Last Answer : (A) Megger (megohmmeter), infinity; (B) Wattmeter, 9.5 kilowatts (9,500 watts). (C) Watt-hour meter, 2.693 megawatt-hours 2,693 kilowatt-hours) (2,693,000 watt-hours).

Description : What type of meter is shown and what is the value of the quantity being measured for each meter in figure1-49?

Last Answer : a. A dc ammeter, 90 mA dc b. A dc voltmeter, 200 V dc c. An ac voltmeter, 4.6 V ac d. An ohmmeter, 400 ohms

Description : If a switch must be checked with power applied, what type of meter is used?

Last Answer : A voltmeter.

Description : Which is more accurate, the bridge- or reactance-type meter?

Last Answer : Bridge type.