# Basically a potentiometer is a device for?

Basically a potentiometer is a device for comparing two voltages.

## Related questions

Description : When the voltage across a battery is measured using a D.C potentiometer, the reading shows 1.08 V. But when the same voltage is measured using a Permanent Magnet Moving Coil (PMMC) voltmeter, the voltmeter reading shows 0.99 ... resistance of the battery, in Ohm , is (A) 150 (B) 100 (C) 50 (D) 200

Last Answer : When the voltage across a battery is measured using a D.C potentiometer, the reading shows 1.08 V. But when the same voltage is measured using a Permanent Magnet Moving Coil (PMMC) voltmeter, ... resistance of the voltmeter is 1100 Ohm , the internal resistance of the battery, in Ohm , is 100

Last Answer : In an AC. co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be out of phase by 90°.

Last Answer : The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a two-phase winding.

Description : To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken?

Last Answer : To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken from the same source as the unknown voltage.

Last Answer : In order to achieve high accuracy, the slide wire of a potentiometer should be as long as possible.

Last Answer : To measure a resistance with the help of a potentiometer it is not necessary to standardise the potentiometer.

Last Answer : A potentiometer may be used for measurement of resistance, measurement of current, calibration of ammeter, calibration of voltmeter.

Description : A rheostat differs from potentiometer in the respect that it?

Last Answer : A rheostat differs from potentiometer in the respect that it has higher wattage rating.

Last Answer : Yes we can use potentiometer for measuring resistance.

Last Answer : Wagner earthing device is used to eliminate errors due to electrostatic coupling.

Last Answer : A damping device prevents the oscillation of the moving system and enables the latter to reach its final position quickly.

Description : State any four materials used in fabrication of semiconductor device and describe its need.

Last Answer : For fabrication of semiconductor devices like transistors diode, solar cell etc. we have to make use of following types of materials  1. Substrate: o It is used for deposition of thin ... . o Metal cans and sealed glass containers satisfy the extreme requirements of space and military users.

Description : Linear and non-linear device

Last Answer : Linear and non-linear device

Description : Why transistor is called as bipolar device.

Last Answer : BJT is called bipolar device because in BJT current conduction takes place due to majority as well as minority charge carriers that is because of electrons as well as holes.

Description : Which of the following device is used for coupling microwave energy?  A) Resonator B) Waveguide C) Loop D) Antenna

Description :  Which of the following is a negative-resistance microwave device for oscillator applications? A) IMPATT Diode B) Gunn Diode C) Snap diode D) Schottky Diode

Last Answer :  Which of the following is a negative-resistance microwave device for oscillator applications? A) IMPATT Diode B) Gunn Diode C) Snap diode D) Schottky Diode

Description : The device which allows reverse power flow and withstands highest switch frequency is (A) GTO (B) MOSFET (C) IGBT (D) Inverter grade SCR

Last Answer : The device which allows reverse power flow and withstands highest switch frequency is MOSFET

Description : A snubber circuit is connected to the power semiconductor device to reduce the (A) turn-on time (B) turn-off time (C) electrical stresses (D) thermal resistance

Last Answer : A snubber circuit is connected to the power semiconductor device to reduce the electrical stresses

Last Answer : A switchgear is device used for switching, controlling and protecting the electrical circuit and equipment.

Description : Is FPGA a volatile device?

Last Answer : Yes, FPGA is a volatile device.

Last Answer : No, IGBT is not the current controlled device. IGBT is a voltage controlled device. IGBT have combine qualities of MOSFET and BJT. The high switching speed of MOSFET and low conduction losses of BJT. Also, IGBT which stands for Insulated Gate Bipolar Transistor have high input impedance.

Last Answer : Thyristor can only be turned on by small gate pulse but it cannot be turn off by using gate hence thyristor is called semi controlled device.

Last Answer : Thyristor can be turn on by positive gate pulse and the current will continue to flow through the device even when the gate voltage is low hence thyristor is called latching device.

Last Answer : No, BJT is a current controlled device .

Description : Spring.

Last Answer : what is now?

Last Answer : MOSFET  are voltage controlled devices.

Last Answer : BJT is current controlled device.

Description : A d.c. potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf0fthe test cell is  A)1.00V B)1.34V C)1.50V D)1.70V

Last Answer : A d.c. potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf0fthe test cell is 1.34V

Last Answer : Potentiometer sensitivity can be increased by Increasing the length of potentiometer wire.

Last Answer : A Ohmmeter is basically: A ammeter

Description : The electrical device shown in the illustration is a/an _____________. EL-0077 A. operating coil B. indicating lamp C. motor armature D. potentiometer

Description : Which one of the following is the name of a device used to measure voltage without drawing ANY current from the circuit being measured? Is it: w) a wattmeter x) a galvanometer y) an ammeter z) a potentiometer

Description : A triac thyristor functions as a control device and is basically ________________. A. two NPN transistors in parallel with a common base lead B. a diode in series with a temperature sensitive capacitor C. two ... -back SCR's with a common gate lead D. a triode tube with an extra heavy grid element

Last Answer : It is required to measure the true open circuit e.m.f. of a battery. The best device is D.C. potentiometer.

Description : What is a potentiometer in Arduino?

Last Answer : A potentiometer in Arduino is a variable resistor that can be used to control the brightness of an LED, the speed of a motor, or the volume of a speaker.

Description : What is a potentiometer in Arduino?

Last Answer : A potentiometer in Arduino is a variable resistor that can be used to adjust the voltage level or control the position of a servo motor.

Description : What is a potentiometer in Arduino?

Last Answer : A potentiometer is an electronic component used in Arduino projects to vary the resistance in a circuit.

Description : How can I wire a doubled up Potentiometer to cut two different frequencies?

Last Answer : answer:Not quite sure I understand (and even if I do, not sure I can help, but I'll try). Are you saying that you want to re-purpose your tone knob to be a balance knob between the two ... pickups wired in parallel) that will widen on the treble side above 5 and widen on the base side below 5?

Description : What is a potentiometer ?

Last Answer : : Potentiometer is a device used to measure voltage difference and electromagnetic force in a voltage drop method.

Description : In a potentiometer experiment the balancing with a cell is at length 240 cm. On shunting the cell with a resistance of `2Omega`, the balancing length

Last Answer : In a potentiometer experiment the balancing with a cell is at length 240 cm. On shunting the cell with a ... Omega` C. `4 Omega` D. `2 Omega`

Description : Potentiometer measures the potential difference more accurately than a voltmeter, because

Last Answer : Potentiometer measures the potential difference more accurately than a voltmeter, because A. it does not ... resistance D. it has a low resistance

Description : In potentiometer experiment, a cell of emf `1.25 V` gives balancing length of 30 cm. If the cell is replaced by another cell, then balancing length is

Last Answer : In potentiometer experiment, a cell of emf `1.25 V` gives balancing length of 30 cm. If the cell is replaced by another ... . `~=1.47 V` D. `~=1.37 V`

Description : An electron in potentiometer experiences a force `2.4xx10^(-19)N`. The length of potentiometer wire is 6m. The emf of the battery connected across the

Last Answer : An electron in potentiometer experiences a force `2.4xx10^(-19)N`. The length of potentiometer wire is 6m. The emf of ... 6 V B. 9 V C. 12 V D. 15 V

Description : A potentiometer wire of length 10 m and resistance `10 Omega` per meter is connected in serice with a resistance box and a 2 volt battery. If a potent

Last Answer : A potentiometer wire of length 10 m and resistance `10 Omega` per meter is connected in serice with a ... Omega` C. `190 Omega` D. `90 Omega`

Description : A potentiometer wire of length `100 cm` having a resistance of `10 Omega` is connected in series with a resistance `R` and a cell of emf `2V` of negli

Last Answer : A potentiometer wire of length `100 cm` having a resistance of `10 Omega` is connected in series with a ... Omega` C. `790 Omega` D. `840 Omega`

Description : A potentiometer wire has length `4 m` and resistance `8 Omega`. The resistance that must be connected in series with the wire and an accumulator of e.

Last Answer : A potentiometer wire has length `4 m` and resistance `8 Omega`. The resistance that must be connected in ... Omega` C. `44 Omega` D. `48 Omega`

Description : A potentiometer wire is `100 cm` long hand a constant potential difference is maintained across it. Two cells are connected in series first to support

Last Answer : A potentiometer wire is `100 cm` long hand a constant potential difference is maintained across it. Two cells are connected ... C. `3 : 2` D. `5 : 1`

Description : Assertion : In potentiometer experiment, null point cannot be obtained if emf of unknown battery is more than the emf of known battery. Reason : By in

Last Answer : Assertion : In potentiometer experiment, null point cannot be obtained if emf of unknown battery is ... If Assertion is false but Reason is true.

Description : Assertion : In case of potentiometer experiment, if emfs of known and unknown both batteries are increased two times, then null point length will rema

Last Answer : Assertion : In case of potentiometer experiment, if emfs of known and unknown both batteries are ... If Assertion is false but Reason is true.