1 Answer

Answer :

Loss of charge method is used to measure: High R

Related questions

Description : The bridge used to measure the dielectric loss of an insulator is: A) Anderson bridge B) Wien’s bridge C) Schering bridge D) Any of the above

Last Answer : C)Schering bridge

Last Answer : Direct method is used to measure Length.

Last Answer : If we have 15 coulombs of charge then 3A can be flown for 5 sec.

Description : A Wien bridge is used to measure (A) quality factor of a coil (B) audio frequency of a signal (C) capacitance of a capacitor (D) inductance of a coil 

Last Answer : D)  Inductance of a coil

Description : Moire fringes are used to measure rotary displacement along with _____.

Last Answer : Moire fringes are used to measure rotary displacement along with optical encoders only.

Description : Megger is used to measure (a) very high resistance or insulation resistance. (b) low resistance. (c) high resistance. (d) very low resistance. 

Last Answer : (a)very high resistance or insulation resistance

Description : A VTVM can be used to measure (a) dc voltage only (b) ac voltage only (c) both (a) and (b) (d) None of the above 

Last Answer : A VTVM can be used to measure DC voltage only. If we want to measure AC voltage then we have to add rectifier.

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

Description : The minimum number of wattmeter(s) required to measure 3-phase, 3-wire balanced or unbalanced power is  A) 1 B) 2 C) 3 D) 4

Last Answer : B

Description : Maxwell's bridge is used to measure (A) Inductance (B) Frequency (C) Capacitance (D) Resistance

Last Answer : Maxwell's bridge is used to measure Inductance 

Description : A Pyrheliometer is an instrument to measure :  (A) temperature of solar photovoltaic cell  (B) intensity of direct solar radiation at normal incidence  (C) intensity of indirect solar radiation  (D) efficiency of a solar photovoltaic cell

Last Answer : A Pyrheliometer is an instrument to measure : intensity of direct solar radiation at normal incidence 

Description : Piezoelectric Transducer is used to measure  (1) displacement (2) resistance (3) current (4) temperature

Last Answer : Piezoelectric Transducer is used to measure displacement 

Description : An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic field having a component along the axis will be  (1) unaffected (2) decreased (3) increased (4) either decreased or increased depending on the direction of the DC field

Last Answer : An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic field having a component along the axis will be either decreased or increased depending on the direction of the DC field

Description : Which of the following can be used to measure the capacitance of a capacitor? A) Rheostat B) Schering bridge C) Wheatstone bridge D) None of these

Last Answer : Which of the following can be used to measure the capacitance of a capacitor? A) Rheostat B) Schering bridge C) Wheatstone bridge D) None of these

Last Answer : A measure of the reproducibility of measurement is known as Precision.

Last Answer :  To measure the flux, devices used are based on Hall effect.

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

Last Answer : A Lissajous patterns are used to measure Frequency and Phase shift.

Last Answer : To measure radio frequency, the suitable frequency meter is heterodoxy frequency meter.

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

Last Answer : A ballistic galvanometer is used to measure: Charge

Last Answer : Maxwell-Wien bridge is used to measure Inductance.

Last Answer : Anderson Bridge is used to measure: L.

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

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

Last Answer : Induction type single phase energy meters measure electric energy in kWh.

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

Description : What is the unit of measure for voltage?

Last Answer : Voltage measured in volts.

Description : What type of meter is used to measure current?

Last Answer : Ammeter

Description : What equipment is used to measure voltage?

Last Answer : Voltmeter is used to measure voltage.

Last Answer : Yes it can...

Last Answer : Voltmeter is used to measure voltage in a circuit.Ohmmeter is used to measure the resistance of a component in a circuit.

Description : Dielectric loss in a capacitor is best measured by (A) Wien Bridge (B) Schering Bridge (C) Anderson Bridge (D) Heaviside-Campbell Equal Ratio Bridge

Last Answer : Dielectric loss in a capacitor is best measured by Schering Bridge

Last Answer : The dielectric loss of capacitance can be measured by Schering bridge.

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

Last Answer : If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is 10°.

Description :  In the measurement of power of balanced load by two wattmeter method in a 3-phase circuit, The readings of the wattmeters are 4 kW and 2 kW respectively, the later is being taken after reversing the connections of current coil. the ... kVAR B) 0.2 & 6 √3 kVAR C) 0.32 & 2 kVAR D) 0.32 & 2 √3 kVAR

Last Answer :  In the measurement of power of balanced load by two wattmeter method in a 3-phase circuit, The readings of the wattmeters are 4 kW and 2 kW respectively, the later is being taken after reversing the ... of current coil. the power factor and reactive power of the load is 0.2 & 6 √3 kVAR

Description : While measuring power in a three phase load by two wattmeter method, the reading of two wattmeter are equal and opposite, when (a) load is balanced (b) power factor is unity (c) phase angle is between 60° to 90° (d) the load is purely inductive 

Last Answer :  Option (d)  Load is purely inductive 

Description : For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging:

Last Answer : For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging: One of the wattmeter connections will have to be reversed

Description : Measurement of power and power factor of a 3-phase system by two wattmeter method can be obtained in case of  1. Balanced load and balanced source  2. Balanced source with 3-phase 3-wire unbalanced load  3. Unbalanced source with 3-phase 3 ... b) 2, 3 and 5 (c) 1, 2, 3, 4 and 5 (d) 1, 2, 3 and 5 

Last Answer : Measurement of power and power factor of a 3-phase system by two wattmeter method can be obtained in case of  1. Balanced load and balanced source  2. Balanced source with 3-phase 3-wire unbalanced load  3. Unbalanced source with 3- ... b) 2, 3 and 5 (c) 1, 2, 3, 4 and 5 (d) 1, 2, 3 and 5 

Description : In the measurement of power by two wattmeter method, when the readings of the two wattmeters are equal, the power factor is (A) Zero (B) Leading (C) Lagging (D) Unity

Last Answer : In the measurement of power by two wattmeter method, when the readings of the two wattmeters are equal, the power factor is Unity

Description : The bridge method commonly used for finding mutual inductance is (A) Heaviside Campbell bridge (B) Schering bridge (C) De Sauty bridge (D) Wien bridge

Last Answer : The bridge method commonly used for finding mutual inductance is Heaviside Campbell bridge

Last Answer : In the case of power measurement by two wattmeter method in a balanced 3Φ system with a pure inductive load both the Wattmeter will indicate the same but of opposite sign.

Description : In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be?

Last Answer : In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be 0.5.

Description : In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was?

Last Answer : In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was unity.