The most commonly used null deflector in a power frequency ac bridge is a:

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Answer :

The most commonly used null deflector in a power frequency ac bridge is a: Vibration galvanometer.

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The bridge method commonly used for finding mutual inductance is

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

Assertion (A) : Wein bridge oscillator is generally used as a variable audio frequency oscillator Reason (R) :

Description : Assertion (A) : Wein bridge oscillator is generally used as a variable audio frequency oscillator Reason (R) : by using either capacitor (or) resistor in one of the arms of the bridge, the frequency of a wein bridge oscillator ... C) (A) is true but (R) is false (D) (A) is false but (R) is true

Last Answer : Assertion (A) : Wein bridge oscillator is generally used as a variable audio frequency oscillator Reason (R) : by using either capacitor (or) resistor in one of the arms of the bridge, the frequency of a wein bridge oscillator ... ) (A) is true but (R) is false (D) (A) is false but (R) is true

Weins bridge is used for measurement of frequency in the applied voltage waveform is measurement of

Description : Weins bridge is used for measurement of frequency in the applied voltage waveform is measurement of frequency in the applied voltage waveform is   (A)sinusoidal (B) square (C) rectangular (D) triangular

Last Answer : Weins bridge is used for measurement of frequency in the applied voltage waveform is measurement of frequency in the applied voltage waveform is sinusoidal 

A resistance R is to be measured using a meter bridge. Student chooses the standared resistance S to be `100 Omega`. He finds the null point at `l_(1)

Description : A resistance R is to be measured using a meter bridge. Student chooses the standared resistance S to be `100 Omega`. He finds the null point at `l_(1)

Last Answer : A resistance R is to be measured using a meter bridge. Student chooses the standared resistance ... a more accurate measurement with a meter bridge

Show that the percentage error in the measurement of resistance by a metre bridge is minimum when the null point is near about the centre of the wire.

Description : Show that the percentage error in the measurement of resistance by a metre bridge is minimum when the null point is near about the centre of the wire.

Last Answer : Show that the percentage error in the measurement of resistance by a metre bridge is minimum when the null point is ... B. 50 cm C. 80 cm D. 100 cm

For dynamic strain measurement, the Wheatstone bridge used is of __________ type. (A) Voltage sensitive null (B) Voltage sensitive deflected (C) Current sensitive deflected (D) None of these

Description : For dynamic strain measurement, the Wheatstone bridge used is of __________ type. (A) Voltage sensitive null (B) Voltage sensitive deflected (C) Current sensitive deflected (D) None of these

Last Answer : (B) Voltage sensitive deflected

tern null as it applies to bridge measurement.

Description : tern null as it applies to bridge measurement.

Last Answer : Null measurements balance voltages so that there is no current flowing through the measuring device and, therefore, no alteration of the circuit being measured. Null measurements are generally more ... the use of standard voltmeters and ammeters, and they still have limits to their precision.

Did Lando Calrissian ever get in trouble for wrecking the Millennium Falcon's deflector dish?

Description : Did Lando Calrissian ever get in trouble for wrecking the Millennium Falcon's deflector dish?

Last Answer : He promised not a scratch.

Would a warp-capable starship actually need a navigational deflector?

Description : Would a warp-capable starship actually need a navigational deflector?

Last Answer : answer:Is warp speed an absolute or a relative number? In other words, could a different ship (or celestial body, or whatever) go faster than warp speed? If it’s a relative speed, then having the deflector might well be useful.

What are the three elements of a bipolar transistor? Are they the: w) grid, plate, cathode x) suppressor, deflector, target y) energizer, controller, terminus z) emitter, base, collector

Description : What are the three elements of a bipolar transistor? Are they the: w) grid, plate, cathode x) suppressor, deflector, target y) energizer, controller, terminus z) emitter, base, collector

Last Answer : ANSWER: Z -- EMITTER, BASE, COLLECTOR

For measurement of radio frequency ac signals __________ type meter is used

Description : For measurement of radio frequency ac signals __________ type meter is used

Last Answer : For measurement of radio frequency ac signals thermo-couple type meter is used

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 radio High frequency communications the higher the radio frequency the ______. A. Higher it can reach B. Shorter it can reach C. Effect is null D. Longer it can reach

Description : In radio High frequency communications the higher the radio frequency the ______. A. Higher it can reach B. Shorter it can reach C. Effect is null D. Longer it can reach

Last Answer : D. Longer it can reach

Commonly used instruments in power system measurement are?

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

The bridge used to measure the dielectric loss of an insulator is:

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

A Wien bridge is used to measure

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

The Maxwell bridge is used for measuring

Description : The Maxwell bridge is used for measuring (a) Capacitance (b) Dielectric loss (c) Inductance (d) Phase angle 

Last Answer : b)inductance

Maxwell's bridge is used to measure

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 

A dummy strain gage is used in a quarter bridge strain gage circuit to :

Description : A dummy strain gage is used in a quarter bridge strain gage circuit to :  (A) compensate for changes in temperature and lead wire resistance  (B) produce more output voltage from the bridge  (C) increase the sensitivity of the bridge  (D) compensate lead wire resistance only

Last Answer : A dummy strain gage is used in a quarter bridge strain gage circuit to : compensate for changes in temperature and lead wire resistance 

The bridge most suited for measurement of a four-terminal resistance in the range of 0.001 Ohm to 0.1 Ohm

Description : The bridge most suited for measurement of a four-terminal resistance in the range of 0.001 Ohm to 0.1 Ohm (A) Wien’s bridge (B) Kelvin double bridge (C) Maxwell’s bridge (D) Shering Bridge

Last Answer : The bridge most suited for measurement of a four-terminal resistance in the range of 0.001 Ohm to 0.1 Ohm (A) Wien’s bridge (B) Kelvin double bridge (C) Maxwell’s bridge (D) Shering Bridge

Wien bridge is useful for measuring

Last Answer : Wien bridge is useful for measuring High frequency.

Kelvin double bridge is best suited for the measurement of:

Last Answer : Kelvin double bridge is best suited for the measurement of: Low resistance

For eliminating the effect of earth capacitance from the bridge network we use:

Last Answer : For eliminating the effect of earth capacitance from the bridge network we use: Wagner’s earthing device

Maxwell-Wien bridge is used to measure

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

Hay’s Bridge is suitable for the measurement of:

Last Answer : Hay’s Bridge is suitable for the measurement of: Inductances with Q>10.

Anderson Bridge is used to measure:

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

Anderson’s bridge is a modification of:

Last Answer : Anderson’s bridge is a modification of: Maxwell’s wien bridge.

If an inductance is connected in one arm of bridge and resistances in the remaining three arms?

Last Answer : If an inductance is connected in one arm of bridge and resistances in the remaining three arms the bridge cannot be balanced.

In a Schering bridge the potential of the detector above earth potential is?

Last Answer : In a Schering bridge the potential of the detector above earth potential is a few volts only.

In an Anderson bridge, the unknown inductance is measured in terms of?

Last Answer : In an Anderson bridge, the unknown inductance is measured in terms of known capacitance and resistance.

For measurements on high voltage capacitors, the suitable bridge is?

Last Answer : For measurements on high voltage capacitors, the suitable bridge is Schering bridge.

A universal RLC bridge uses?

Description : A universal RLC bridge uses?

Last Answer : A universal RLC bridge uses Maxwell Wein bridge for measurement of inductance and modified De Santy's bridge for measurement of capacitance.

A solar cell of 350 V is feeding power to an ac supply of 440 V, 50 Hz through a 3-phase fully controlled bridge

Description : A solar cell of 350 V is feeding power to an ac supply of 440 V, 50 Hz through a 3-phase fully controlled bridge converter. A large inductance is connected in the dc circuit to maintain the dc current at 20 A ... thyristor will be reverse biased for a period of  (A) 125o (B) 120o (C) 60o (D) 55o

Last Answer : A solar cell of 350 V is feeding power to an ac supply of 440 V, 50 Hz through a 3-phase fully controlled bridge converter. A large inductance is connected in the dc circuit to maintain the ... the solar cell resistance is 0.5 Ohm ,then each thyristor will be reverse biased for a period of 125o

Commonly used standard capacitor is?

Last Answer : Commonly used standard capacitor is concentric cylindrical type.

Two stator windings of AC servomotors are oriented:

Description : Two stator windings of AC servomotors are oriented: A) 90 degree (mechanical) apart B) 90 degree (electrical) apart C) 180 degree (mechanical) apart D) 180 degree (electrical) apart

Last Answer : Two stator windings of AC servomotors are oriented: 90 degree (electrical) apart 

In a standard multimeter for measuring AC voltage, parameter of _____ voltage is measured

Description : In a standard multimeter for measuring AC voltage, parameter of _____ voltage is measured

Last Answer : In a standard multimeter for measuring AC voltage, parameter of RMS voltage is measured

In an ac tachometer, the two stator field coils are mounted

Description : In an ac tachometer, the two stator field coils are mounted

Last Answer : In an ac tachometer, the two stator field coils are mounted in space quadrate

An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to

Description : An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to  (1) 1.414 times dc sensitivity (2) dc sensitivity (3) 0.9 times dc sensitivity (4) 0.707 times dc sensitivity

Last Answer : An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to 0.9 times dc sensitivity

An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic

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

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

In an AC. co-ordinate potentiometer, the currents in the phase and quadrature potentiometer are adjusted to be?

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°.

can ammeter measure ac?

Last Answer : Yes it can...

The device in figure 'B' shown in the illustration can be used to control an AC load yet maintain its high gain by ______________. EL-0091 A. connecting the load to the output side of the bridge B. reversing the current flow through the control winding C. connecting the load to the input side of the bridge D. reversing the current flow through the bias winding

Description : The device in figure 'B' shown in the illustration can be used to control an AC load yet maintain its high gain by ______________. EL-0091 A. connecting the load to the output side of the ... connecting the load to the input side of the bridge D. reversing the current flow through the bias winding

Last Answer : Answer: C

An AC bridge that measures capacitance and dissipation factor

Description : An AC bridge that measures capacitance and dissipation factor

Last Answer : Schering 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

This refers to a four-arm ac bridge used for measuring inductance against a standard capacitance.

Description : This refers to a four-arm ac bridge used for measuring inductance against a standard capacitance.

Last Answer : Maxwell Bridge

An AC bridge that measures mutual inductance

Description : An AC bridge that measures mutual inductance

Last Answer : Heaviside bridge

A 3-phase fully controlled bridge converter with free wheeling diode is fed from 400 V, 50 Hz AC source and

Description : A 3-phase fully controlled bridge converter with free wheeling diode is fed from 400 V, 50 Hz AC source and is operating at a firing angle of 60o. The load current is assumed constant at 10 A due to high load inductance. The input ... 0.552 (C) IDF IPF = = 0.5; 0.478 (D) IDF IPF = = 0.5; 0.318 

Last Answer : A 3-phase fully controlled bridge converter with free wheeling diode is fed from 400 V, 50 Hz AC source and is operating at a firing angle of 60o. The load current is assumed constant at 10 A due to high ... (IDF) and the input power factor (IPF) of the converter will be IDF IPF = = 0.5; 0.478

A three-phase, 440 V, 50 Hz ac mains fed thyristor bridge is feeding a 440 V dc, 15 kW, 1500 rpm separately

Description : A three-phase, 440 V, 50 Hz ac mains fed thyristor bridge is feeding a 440 V dc, 15 kW, 1500 rpm separately excited dc motor with a ripple free continuous current in the dc link under all operating conditions, Neglecting the ... at half the rated speed is  (A) 0.354 (B) 0.372 (C) 0.90 (D) 0.955

Last Answer : A three-phase, 440 V, 50 Hz ac mains fed thyristor bridge is feeding a 440 V dc, 15 kW, 1500 rpm separately excited dc motor with a ripple free continuous current in the dc link under all operating conditions, Neglecting the losses, the power factor of the ac mains at half the rated speed is 0.354

A single-phase fully controlled thyristor bridge ac-dc converter is operating at a firing angle of 25 and an

Description : A single-phase fully controlled thyristor bridge ac-dc converter is operating at a firing angle of 25o and an overlap angle of 10o with constant dc output current of 20 A. The fundamental power factor (displacement factor) at input ac mains is  (A) 0.78 (B) 0.827 (C) 0.866 (D) 0.9

Last Answer : A single-phase fully controlled thyristor bridge ac-dc converter is operating at a firing angle of 25o and an overlap angle of 10o with constant dc output current of 20 A. The fundamental power factor (displacement factor) at input ac mains is 0.78