An electrostatic voltmeter in which an assembly of figure-8-shaped metal plates rotates
between the plates of a stationary assembly when a voltage is applied betweeen the
assemblies.

1 Answer

Answer :

Kelvin voltmeter

Related questions

Description : How much current does an electrostatic voltmeter require through it to operate?

Last Answer : zero current

Description : A Kelvin electrostatic voltmeter uses what method of damping?

Last Answer : fluid friction

Description : What kind of voltage is applied to the horizontal deflection plates of the oscilloscope?

Last Answer : sweep voltage

Description : Voltage measurement in a high impedance circuit requires a voltmeter with

Last Answer : high input impedance

Description : Which of the voltmeter is used for measuring high direct voltage (say 10kV)?

Last Answer : electrostatic

Description : What is the typical full-scale voltage across a moving coil voltmeter?

Last Answer : 50mV

Description : Electrostatic instruments are exclusively used as

Last Answer : voltmeters

Description : Electrostatic instruments are exclusively used as

Last Answer : voltmeters

Description : Calculate the series resistance needed to convert a D' Arsonval meter with FSD of 100uA and a meter resistance of 1kohm to a voltmeter with 10V FSD.

Last Answer : Rs=10V/100uA - 1kohm = 99kohm

Description : Error in voltmeter is due to ___

Last Answer : loading

Description : High sensitive DC voltmeter provides accurate reading when measuring ___ circuits.

Last Answer : high resistance

Description : High sensitive DC voltmeter provides accurate reading when measuring ___ circuits.

Last Answer : high resistance

Description : In order to make an accurate measurement as possible, the internal resistance of a voltmeter must be

Last Answer : as high as possible

Description : What should be the resolution of a digital voltmeter having three digit 0-3V?

Last Answer : 3mV

Description : An indicating instrument whose movable coils rotate between two-stationary coils, usually used as wattmeter

Last Answer : electrodynamometer

Description : What are the different types of orifice plates and state their uses ?

Last Answer : The different types of orifice plates are : • Concentric. • Segmental. • Eccentric. • Quadrant Edge.

Description : How is D.P. transmitter applied to a close tank ?

Last Answer : In close tank the bottom of the tank is connected to the high pressure side of the transmitter and top of the tank in connected to L.P. side of the transmitter. In this way the vessel pressure is balanced.

Description : The ___ provides the visual display showing the form of the signal applied as a waveform on the front screen of a cathode ray oscilloscope

Last Answer : CRT

Description : What provides a visual representation of any waveform applied to the input terminals?

Last Answer : cathode ray oscilloscope (CRO)

Description : What is Zener Diode ? What is a voltage Regulator ?

Last Answer : The breakdown region of a p n diode can be made very sharp and almost vertical Diodes with almost vertical breakdown region are known as Zever Diodes. A Zener diodes operating in the breakdown ... VOLTAGE REGULATOR : The output remains constant despite changes in input voltage due to Zever effect.  

Description : What is the constant voltage unit ?

Last Answer : The constant voltage circuit consists of a rectifier, CR, a filter capacitor C1, followed by two stages of zener regulation. Abridge configuration is provided to 1amp line voltage regulation ... , Thus variations. Resisters R2 and R3 form a bridge that any remoment line voltage effects. 

Description : The only use of voltage senstive meter movement

Last Answer : very low voltage measurement

Description : A sensing element that provides a dc voltage less than 10mV with typical power range of 0.1 to 100mW

Last Answer : thermal converters

Description : An electronic measuring device that provide instantaneous visual indication of voltage excursions

Last Answer : oscilloscope

Description : A device or instrument able to generate noise with accurate voltage for test purposes

Last Answer : noise generator

Description : The output voltage of a thermocouple

Last Answer : increases with temperature

Description : A type of meter that gives a precise reading of voltage, current or resistance where there is the generation of samples at the input and then feeds it to a digital read-out.

Last Answer : DMM

Description : What sensor provides a dc voltage approximately 1V at 10mW?

Last Answer : diode sensor

Description : An ammeter has a full-scale deflection current of 100mA. If the same ammeter is used to measure a full-scale current of 1.0ampere, what is the value of the shunt resistor in ohms if the voltage across the meter is 9.0 volts?

Last Answer : 10 ohms

Description : Voltage applied across a ceramic dielectric produces an electrostatic field 100 times greater than in air. The dielectric constant? of the ceramic equals________. 

Last Answer : Voltage applied across a ceramic dielectric produces an electrostatic field 100 times greater than in air. The dielectric constant? of the ceramic equals 100.

Description : The geostationary satelliteused for communication systems A. rotates with the earth B. remains stationary relative to theearth C. is positioned overequator D. All of theabove E. None of the above

Last Answer : All of theabove

Description : What are the differences and simularties betweeen the October and Oka crisis?

Last Answer : Is this a homework question?

Description : The member of the Constituent Assembly were: a. Nominated by Governor-General. b. Directly elected by people c. Elected by provincial assemblies d. Nominated by Indian National Congress.

Last Answer : c. Elected by provincial assemblies

Description : In a single-phase induction motor when the rotor is stationary and voltage is applied to the stator, then (A) the flux is constant (B) the flux first decreases and then increases in ... increases and decreases in the opposite direction with the same magnitude (D) current flows through the rotor

Last Answer : In a single-phase induction motor when the rotor is stationary and voltage is applied to the stator, then the flux first decreases and then increases in the same direction

Description : What material is applied to electronic assemblies to prevent damage from corrosion, moisture, and stress?

Last Answer : Conformal coating

Description : The value of the capacitance depends upon the________________? A.voltage applied B. thickness of the capacitor plates C. geometry of the capacitor D. dinsity of the capacitor plates

Last Answer : Ans: C

Description : Three capacitors with different capacitances are connected in series. Which of the following statements is TRUE? w) All three of the capacitors have the same potential difference between their plates. x ... y) The capacitance of the system depends on the voltage applied across the three capacitors.

Last Answer : ANSWER: X -- THE MAGNITUDE OF THE CHARGE IS THE SAME ON ALL OF THE CAPACITOR PLATES

Description : belt of silk runs over two metal pulleys, one of which is surrounded by a hollow metal sphere. Two electrodes, in the form of comb-shaped rows of sharp metal points, are positioned ... potential is applied to the upper pulley. A simple version of which equipment is being described here?

Last Answer : Van de Graaff generator.

Description : A synchronous motor maintains synchronism with the rotating field because _____________. A. field strength varies directly with rotor slip B. DC current applied to the rotor coils causes the rotor ... the flux created by the excitation current D. the stator flux rotates in the opposite direction

Last Answer : Answer: B

Description : What is a filter used for ?

Last Answer : The half wave and full wave signals are pulsating D . C . voltages. The use of such voltages is limited to charging batteries, running D. C. motors, and a few other applications. What we really ... voltage from a battery. To get a constant voltage from this, we can use a capacitor input filter. 

Description : What is transistor ? What are the different types ?

Last Answer : A transistor is a three lagged semi conductor device. Basically a transistor means (transfer - resister). Whether the transistor is pnp or npn it resembles two diodes (back to back). The one of the left ... transistor : Emitter - Base - Forward Bias. Collector - Base - Reverse Bias. 

Description : What is CB, CE and CC configuration ?

Last Answer : Buffer : A device or a circuit used to isolate two pt'ne circuits or stages. The emitter follows is a example of buffer. Alpha = IC / IE Beta = IC / IB

Description : How will you test a transistor with a multimeter. ?

Last Answer : 1. Emitter +ve of meter and Base -ve output = Low resistance 2. Emitter -ve of meter and base +ve output = High resistance. 3. Collector +ve and Base -ve output = Low. 4. Collector -ve and base +ve output = High. Emitter : Collector = High Resistance. PNP : Opposite Results. 

Description : What is a thyristor ? What are its uses ?

Last Answer : A thyristor is a special kind of semi conductor device that uses internal feedback to produce latching action. Use : Used for controlling large amounts of load power in motors, heaters, lighting systems etc ... the latches like a open switch. This latch will always stay in open or close position.  

Description : What does a transmitter output start from 3-15 psi or (0.2 - 1 Kg/Cm2) or 4 - 20 ma. etc. ? 

Last Answer : The transmitter output stance from what is known as "live zero". This system has specific advantages : 1. The systems automatically alarms when the signal system becomes inoperative. ... transmitter operating, but transmitting a zero measurement and a failure, in the signal system. 

Description : What are Intrinsically safe system ?

Last Answer : Intrinsic safety is a technique for designing electrical equipment for safe use in locations made hazardous by the presence of flammable gas or vapors in air. "Defn. :" Intrinsically safe circuit is ... , unfortunately, been adopted in all countries. However two sets of codes in common use are.  

Description : What is feed back control ? What is feed forward control ? Discuss its application ?

Last Answer : Feed back control: Feed back control involves the detection of the controlled variable and counteracting of charges its it's value relative to set point, by adjustment of a manipulated ... controller for a particular process application, two factors time and gain must be considered.    

Description : What is Furnace Draft control ? 

Last Answer : Balanced draft boilers are generally used negative furnace pressure. When both forced draft and induced draft are used together, at some point in the system the pressure will be the same as that of atmosphere. ... have is a very slight (about 0.1" H20 ) negative pressure of the top of furnace.  

Description : What is the difference the a wheatstone bridge and a potentiometer ?

Last Answer : The difference between a potentiometer and a wheatstone bridge measuring instrument is that potentiometer is a voltage measuring instrument and wheatstone bridge is a current measuring instrument. 

Description : What is the specialty of thermocouples lead wires ?

Last Answer : They should be of the same material as the thermocouple.