The electrostatic instruments can be used without serious loss of accuracy upto ......... frequency

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The electrostatic instruments can be used without serious loss of accuracy upto 100kHz frequency.

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Electrostatic type instruments are primarily used as

Description : Electrostatic type instruments are primarily used as 

Last Answer : Voltmeter

Electrostatic instruments are normally used for

Last Answer :  Electrostatic instruments are normally used for High voltage measurements.

Thermocouple instruments can be used for a frequency range upto

Description : Thermocouple instruments can be used for a frequency range upto   (a) 100Hz (b) 5000 Hz (c) 1 MHz (d) 50 MHz and above 

Last Answer : Thermocouple instruments can be used for a frequency range upto 50 MHz and above 

Electrostatic type instruments are mainly used for measurement of: a) Heavy currents b) Low currents c) Low voltages d) High voltages

Description : Electrostatic type instruments are mainly used for measurement of: a) Heavy currents b) Low currents c) Low voltages d) High voltages

Last Answer : Ans: D

Electrostatic forces in high voltage circuits cause indicating instruments to give ____________. A. parallax readings B. highly intuitive readings C. highly accurate readings D. inaccurate readings

Description : Electrostatic forces in high voltage circuits cause indicating instruments to give ____________. A. parallax readings B. highly intuitive readings C. highly accurate readings D. inaccurate readings

Last Answer : Answer: D

Electrostatic instruments are exclusively used as

Description : Electrostatic instruments are exclusively used as

Last Answer : voltmeters

Electrostatic instruments are exclusively used as

Description : Electrostatic instruments are exclusively used as

Last Answer : voltmeters

Electrostatic instrument uses the principle of the variation of

Last Answer : Electrostatic instrument uses the principle of the variation of Capacitance with the voltage.

Inductance and capacitance in the electrostatic system of units has the dimensions of

Last Answer : Inductance and capacitance in the electrostatic system of units has the dimensions of length.

A 0-10 A ammeter has a guaranteed accuracy of 1% of full scale deflection, the limiting error while reading

Description : A 0-10 A ammeter has a guaranteed accuracy of 1% of full scale deflection, the limiting error while reading 2.5 A will be (a) 1% (b) 2% (c) 4% (d) None of these 

Last Answer : A

In the case of an instrument reading of 8.3 V with a 0 to 150 voltmeter having a guaranteed accuracy of

Description :  In the case of an instrument reading of 8.3 V with a 0 to 150 voltmeter having a guaranteed accuracy of 1% full scale reading, the percentage limiting error is   (A) 1.810% (B) 0.181% (C)12.45% (D) 0.0018%

Last Answer :  In the case of an instrument reading of 8.3 V with a 0 to 150 voltmeter having a guaranteed accuracy of 1% full scale reading, the percentage limiting error is 12.45%

The repeat accuracy of an instrument can be judged from its

Last Answer : The repeat accuracy of an instrument can be judged from its standard deviation of error.

For high accuracy the meter has

Last Answer : For high accuracy the meter has Hand drawn scale.

A 0 to 300V voltmeter has a guaranteed accuracy of 1% of full scale...

Description : A 0 to 300V voltmeter has a guaranteed accuracy of 1% of full scale reading. The voltage measured by the instrument is 83V. The percentage limiting error is

Last Answer : A 0 to 300V voltmeter has a guaranteed accuracy of 1% of full scale reading. The voltage measured by the instrument is 83V. The percentage limiting error is 4.85%.

A 150 V moving iron voltmeter of accuracy class 1.0 reads 75 V when ...

Description : A 150 V moving iron voltmeter of accuracy class 1.0 reads 75 V when used in a circuit under a standard conditions. The maximum possible percentage error in the reading is:

Last Answer : A 150 V moving iron voltmeter of accuracy class 1.0 reads 75 V when used in a circuit under a standard conditions. The maximum possible percentage error in the reading is:  2.0.

In order to achieve high accuracy, the slide wire of a potentiometer should be?

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

Prophylactic therapy of migraine: A. Is recommended in all cases B. Benefits upto 70% patients of moderate to severe migraine C. Needs to be continued lifelong without interruption D. Reduces the severity but increases the frequency of migraine attacks

Description : Prophylactic therapy of migraine: A. Is recommended in all cases B. Benefits upto 70% patients of moderate to severe migraine C. Needs to be continued lifelong without interruption D. Reduces the severity but increases the frequency of migraine attacks

Last Answer : B. Benefits upto 70% patients of moderate to severe migraine

Which of the following instruments can be used for measurement of very high value resistances such as

Description : Which of the following instruments can be used for measurement of very high value resistances such as insulation resistance in industries? A) Wheatstone bridge B) Megger C) Ohm-meter D) Resistive potentiometer 

Last Answer : Which of the following instruments can be used for measurement of very high value resistances such as insulation resistance in industries? A) Wheatstone bridge B) Megger C) Ohm-meter D) Resistive potentiometer 

Highest flux density exists inside which of the following instruments?

Description :  Highest flux density exists inside which of the following instruments? A) Electrodynamic instruments B) Hot wire instruments C) Moving iron instruments D) Moving coil instruments

Last Answer : Highest flux density exists inside which of the following instruments? A) Electrodynamic instruments B) Hot wire instruments C) Moving iron instruments D) Moving coil instruments 

The type of instruments used mainly for standardizing instruments in laboratories is

Description : The type of instruments used mainly for standardizing instruments in laboratories is (a) Indicating instrument (b) Integrating instrument (c) Absolute instrument (d) Recording instrument  

Last Answer : Ans:Option C

Eddy current damping is normally used in the instruments of

Description : Eddy current damping is normally used in the instruments of (a) Induction type (b) Moving iron type (c) Permanent magnet moving coil type (d) Nothing can be said 

Last Answer : Permanent  magnetic  moving  coil  instrument.

The force required to move the pointer in an indicating instruments is

Description : The force required to move the pointer in an indicating instruments is

Last Answer : The force required to move the pointer in an indicating instruments is deflecting force

Horizontally mounted moving iron instruments use

Description : Horizontally mounted moving iron instruments use   (a) Eddy current damping (b) Electromagnetic damping (c) Fluid friction damping (d) Air friction damping

Last Answer : Horizontally mounted moving iron instruments use Air friction damping

Permanent magnet moving coil instruments are used for

Description : Permanent magnet moving coil instruments are used for

Last Answer : PMME are mostly used for measuring voltage and current.

Thermocouple instruments are also known as

Last Answer : Thermocouple instruments are also known as Rectifier instruments.

PMMC type instruments normally use

Last Answer : PMMC type instruments normally use Eddy current damping.

Which of the following instruments can be used to measure AC current only?

Description : Which of the following instruments can be used to measure AC current only? (a) Permanent Magnet Type ammeter(b) Induction type ammeter (c) Moving iron voltmeter(d) Moving iron ammeter

Last Answer : (b) Induction type ammeter

Jewels are used in instruments for the purpose of

Last Answer : Jewels are used in instruments for the purpose of Bearing.

The thermocouple instruments do not have

Last Answer : The thermocouple instruments do not have High degree of measuring accuracy.

In the case of PMMC rectifier type instruments, the deflecting torque is proportional to

Last Answer : In the case of PMMC rectifier type instruments, the deflecting torque is proportional to Average value of AC current.

_____ instruments are those which measure the total quantity of electricity delivered in a particular time.

Last Answer : Integrating instruments are those which measure the total quantity of electricity delivered in a particular time.

The use of _____ instruments is merely confined within laboratories as standardising instruments.

Description : The use of _____ instruments is merely confined within laboratories as standardising instruments.

Last Answer : The use of absolute instruments is merely confined within laboratories as standardizing instruments.

Air friction damping is used in the instruments which is:

Last Answer : Air friction damping is used in the instruments which is: Moving iron

Moving iron and PMMC instruments can be distinguished from each other by looking at:

Last Answer : Moving iron and PMMC instruments can be distinguished from each other by looking at: Scale

Commonly used instruments in power system measurement are?

Last Answer : Commonly used instruments in power system measurement are induction.

Operating torques in analogue instruments are?

Last Answer : Operating torques in analogue instruments are deflecting, control and damping.

The power factor of a single phase load can be calculated if the instruments available are?

Last Answer : The power factor of a single phase load can be calculated if the instruments available are three ammeters or three voltmeters.

The switch board instruments?

Last Answer : The switch board instruments should be mounted in vertical position.

In majority of instruments damping is provided by?

Last Answer : In the majority of instruments, damping is provided by eddy currents.

According to application, instruments are classified as?

Last Answer : According to application, instruments are classified as switch board, portable.

Which instruments are those which measure the total quantity of electricity delivered in a particular time?

Last Answer : Integrating instruments are those which measure the total quantity of electricity delivered in a particular time.

The use of which instruments is merely confined within laboratories as standardizing instruments?

Last Answer : The use of absolute instruments is merely confined within laboratories as standardizing instruments.

What do you mean by secondary instruments?

Description : What do you mean by secondary instruments?

Last Answer : The instruments which will give the direct readings are called secondary instruments

Which of the following antennas is used for testing and adjusting a transmitter for proper modulation, amplifier operation and frequency accuracy? A. Elementary B. Real C. Isotropic D. Dummy

Description : Which of the following antennas is used for testing and adjusting a transmitter for proper modulation, amplifier operation and frequency accuracy? A. Elementary B. Real C. Isotropic D. Dummy

Last Answer : D. Dummy

The carrier waves used for the radio transmission have frequency upto A. 15 KHz B. 30 KHz C. 90 KHz D. 150 KHz

Description : The carrier waves used for the radio transmission have frequency upto A. 15 KHz B. 30 KHz C. 90 KHz D. 150 KHz

Last Answer : ANSWER: B

In case of loss or damage of the parcel, compensation is paid upto a maximum in EPP is a) 100/- b) 500/- c) 200/- d) 1000/

Description : In case of loss or damage of the parcel, compensation is paid upto a maximum in EPP is a) 100/- b) 500/- c) 200/- d) 1000/

Last Answer : b) 500/

Upto the critical radius of insulation, added insulation, will (A) Increase the heat loss (B) Decrease heat loss and will have no effect beyond that (C) Decrease heat flux (D) Reduce convection heat loss compared to conduction heat less

Description : Upto the critical radius of insulation, added insulation, will (A) Increase the heat loss (B) Decrease heat loss and will have no effect beyond that (C) Decrease heat flux (D) Reduce convection heat loss compared to conduction heat less

Last Answer : Option B

Which of the following statements regarding evacuated tube collectors (ETC) are true? i) ETC is used for high temperatures upto 150oC ii) because of use of vacuum between two concentric glass tube, higher amount of heat is retained in ETC iii) heat loss due to conduction back to atmosphere from ETC is high iv) performance of evacuated tube is highly dependent upon the ambient temperature i & iii b) ii & iii c) i & iv d) i & ii

Description : Which of the following statements regarding evacuated tube collectors (ETC) are true? i) ETC is used for high temperatures upto 150oC ii) because of use of vacuum between two concentric glass tube, higher amount of heat is ... upon the ambient temperature i & iii b) ii & iii c) i & iv d) i & ii

Last Answer : d) i & ii

An internal resistance is placed in series with the meter movement of which of the following instruments? A. AC ammeter B. DC ammeter C. DC voltmeter D. Frequency meter

Description : An internal resistance is placed in series with the meter movement of which of the following instruments? A. AC ammeter B. DC ammeter C. DC voltmeter D. Frequency meter

Last Answer : Answer: C

Which of the instruments listed could be use to locate a grounded field coil in a synchronous motor? A. Ammeter B. Voltmeter C. Megohmmeter D. Frequency meter

Description : Which of the instruments listed could be use to locate a grounded field coil in a synchronous motor? A. Ammeter B. Voltmeter C. Megohmmeter D. Frequency meter

Last Answer : Answer: C