Insulation resistance is measured by which meter?

Insulation resistance is measured by which meter?
by

1 Answer

Answer :

megger
by

Related questions

Resistance measuring instrument particularly used in determining the insulation resistance

Description : Resistance measuring instrument particularly used in determining the insulation resistance

Last Answer : Megger/Megaohmmeter

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.

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

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.

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

Calculate the shunt resistance needed to increase the FSD of an ammeter 5 times if the meter resistance is 1kohm

Description : Calculate the shunt resistance needed to increase the FSD of an ammeter 5 times if the meter resistance is 1kohm

Last Answer : 250ohms

What is the normal indication on a megger when checking insulation?

Description : What is the normal indication on a megger when checking insulation?

Last Answer : infinity

An electrodynamic meter used t measure power

Description : An electrodynamic meter used t measure power

Last Answer : wattmeter

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

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

Last Answer : Vibrating Reed Type

The only use of voltage senstive meter movement

Description : The only use of voltage senstive meter movement

Last Answer : very low voltage measurement

When the meter is unsufficiently damped, it is considered as ___

Description : When the meter is unsufficiently damped, it is considered as ___

Last Answer : underdamped

It is the reciprocal of the full-scale current of a meter

Description : It is the reciprocal of the full-scale current of a meter

Last Answer : sensitivity

A meter when __ will become insensitive to small signals

Description : A meter when __ will become insensitive to small signals

Last Answer : overdamped

Type of power-line frequency meter device utilizing a principle of balancing an indicator needle at center of a scale using magnetic fields opposing each other.

Description : Type of power-line frequency meter device utilizing a principle of balancing an indicator needle at center of a scale using magnetic fields opposing each other.

Last Answer : magnetic type

A meter has a full-scale current of 50uA, what is its sensitivity?

Description : A meter has a full-scale current of 50uA, what is its sensitivity?

Last Answer : Is=1/50uA=20kohm/V

Errors due to frictions of the meter movement, incorrect spring tension, improper calibration or faulty instruments:

Description : Errors due to frictions of the meter movement, incorrect spring tension, improper calibration or faulty instruments:

Last Answer : instrument errors

What is that meter that depends for its operation on the forces attraction and repulsion

Description : What is that meter that depends for its operation on the forces attraction and repulsion

Last Answer : electrostatic instrument

A tunable RF instrument, which, by means of a sharp dip of an indicating meter, indicates resonance with an external circuit under test

Description : A tunable RF instrument, which, by means of a sharp dip of an indicating meter, indicates resonance with an external circuit under test

Last Answer : dip meter

What is the most common type of meter movement?

Description : What is the most common type of meter movement?

Last Answer : D' Arsonval

In meter movement, how do oyu prevent the meter from oscillating and overswing?

Description : In meter movement, how do oyu prevent the meter from oscillating and overswing?

Last Answer : by damping

What type of instrument is the watt-hour meter?

Description : What type of instrument is the watt-hour meter?

Last Answer : an integrating

___ meter is the most sensitive

Description : ___ meter is the most sensitive

Last Answer : 1uA

A galvanometer with 20 ohms coil resistence has a full-scale deflection of 10 mA. A 0.02 ohm is placed across the meter to increase its rating capacity. What is the new full scale current for the meter?

Description : A galvanometer with 20 ohms coil resistence has a full-scale deflection of 10 mA. A 0.02 ohm is placed across the meter to increase its rating capacity. What is the new full scale current for the meter?

Last Answer : False.

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?

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

Why flow is measured in square root?

Description : Why flow is measured in square root?

Last Answer : Flow varies directly as the square root of different pressure F = K square root of D/P. Since this flow varies as the square root of differential pressure the pen does not directly indicate flow. The flow can be determined by taking the square root of the pen. Say the pen reads 50% of chart.

The frequency of rotation in some rotating machinery can be measured by a

Description : The frequency of rotation in some rotating machinery can be measured by a

Last Answer : stroboscope

Most AC voltmeters have an rms scale which is valid only if the input signal being measured is a __ signal.

Description : Most AC voltmeters have an rms scale which is valid only if the input signal being measured is a __ signal.

Last Answer : sinusoidal

In VTVMS, ___ refers to the smallest signal that can be reliably measured

Description : In VTVMS, ___ refers to the smallest signal that can be reliably measured

Last Answer : sensitivity

The smallest change in a measured variable to which an instrument will respond.

Description : The smallest change in a measured variable to which an instrument will respond.

Last Answer : resolution

Tank-circuit frequency can be measured by

Description : Tank-circuit frequency can be measured by

Last Answer : grid dip meter

A moving system force in analog instruments which ensures that the deflection of the pointer for a given value of measured quantity always has the same value

Description : A moving system force in analog instruments which ensures that the deflection of the pointer for a given value of measured quantity always has the same value

Last Answer : controlling force

What is this instrument or circuit that has four or more arms, by means of which one or more of the electrical constance of an unknown component may be measured?

Description : What is this instrument or circuit that has four or more arms, by means of which one or more of the electrical constance of an unknown component may be measured?

Last Answer : bridge

An instrument in which the magnitude of the measured quantity is indicated by means of pointer.

Description : An instrument in which the magnitude of the measured quantity is indicated by means of pointer.

Last Answer : analog instrument

What is the degree of exactness of measurement when compared to the expected value of the variable being measured?

Description : What is the degree of exactness of measurement when compared to the expected value of the variable being measured?

Last Answer : Accurary

Which of the following bridges measures dc resistance?

Description : Which of the following bridges measures dc resistance?

Last Answer : Wheatstone bridge

A dc bridge widely used for the accurate measurements of resistance

Description : A dc bridge widely used for the accurate measurements of resistance

Last Answer : Wheatstone bridge

What sensor provides a change of resistance with typical power range of 1uW to 10mW and with maximum frequency greater than 100GHz

Description : What sensor provides a change of resistance with typical power range of 1uW to 10mW and with maximum frequency greater than 100GHz

Last Answer : thermistor sensor

A small swamping resistance is connected in series with operating coil of a moving coil ammter in order to compensate for the effects of ____

Description : A small swamping resistance is connected in series with operating coil of a moving coil ammter in order to compensate for the effects of ____

Last Answer : temperature variation

A four-arm bridge. All arms of which are predominantly resistive; used for measuring resistance

Description : A four-arm bridge. All arms of which are predominantly resistive; used for measuring resistance

Last Answer : Resistance Bridge and Wheatstone Bridge

An AC bridge that measures inductance in terms of resistance and capacitance.

Description : An AC bridge that measures inductance in terms of resistance and capacitance.

Last Answer : Owen's Bridge

Refers to an ac bridge for measuring the inductance and Q of an inductor in terms of resistance, frequency and a standard capacitance.

Description : Refers to an ac bridge for measuring the inductance and Q of an inductor in terms of resistance, frequency and a standard capacitance.

Last Answer : hay bridge

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

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

Last Answer : as high as possible

An ammeter with an internal resistance of 50 ohm(s) is used to measure a current thorugh a lod resistor Rl = 1 kohm(s). Determine the percentage error of the reading due to ammeter insertion.

Description : An ammeter with an internal resistance of 50 ohm(s) is used to measure a current thorugh a lod resistor Rl = 1 kohm(s). Determine the percentage error of the reading due to ammeter insertion.

Last Answer : 50/(50+1k)*100 = 4.76%

In preparing to take insulation resistance readings on a main generator, the windings should be grounded for about 15 minutes prior to the test to _____________. A. allow accurate zeroing of the meter B. help the windings to cool to ambient temperature C. release any residual capacitive charge from the windings D. help the windings to cool to the same temperature as the ground test connection

Description : In preparing to take insulation resistance readings on a main generator, the windings should be grounded for about 15 minutes prior to the test to _____________. A. allow accurate zeroing of the meter ... the windings D. help the windings to cool to the same temperature as the ground test connection

Last Answer : Answer: C

When a megohmmeter is being used on a alternating current machine, the meter pointer will dip toward 'zero' and then gradually rise to the true resistance value if the motor insulation is _____________. A. grounded B. good C. shorted D. dirty

Description : When a megohmmeter is being used on a alternating current machine, the meter pointer will dip toward 'zero' and then gradually rise to the true resistance value if the motor insulation is _____________. A. grounded B. good C. shorted D. dirty

Last Answer : Answer: B

Before using a volt-ohmmeter to measure resistance readings, you should _____________. A. replace all batteries B. test the insulation resistance of the leads C. make sure the test leads do not touch D. hold the leads together and 'zero' the meter

Description : Before using a volt-ohmmeter to measure resistance readings, you should _____________. A. replace all batteries B. test the insulation resistance of the leads C. make sure the test leads do not touch D. hold the leads together and 'zero' the meter

Last Answer : Answer: D

Which of the listed statements is correct when using an analog multimeter as an ohmmeter? A. The pointer should be adjusted to zero each time a new resistance range is selected. B. The pointer will move to infinity when the meter is not in use. C. Ohmmeters are not sufficiently sized to measure conductor insulation resistance. D. All of the above.

Description : Which of the listed statements is correct when using an analog multimeter as an ohmmeter? A. The pointer should be adjusted to zero each time a new resistance range is selected. B. The ... C. Ohmmeters are not sufficiently sized to measure conductor insulation resistance. D. All of the above.

Last Answer : Answer: D

What is a filter used for ?

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. 

What is Zener Diode ? What is a voltage Regulator ?

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.  

What is transistor ? What are the different types ?

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. 

What is CB, CE and CC configuration ?

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

How will you test a transistor with a multimeter. ?

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.