To measure radio frequency, the suitable frequency meter is

by

1 Answer

Answer :

To measure radio frequency, the suitable frequency meter is heterodoxy frequency meter.

by

Related questions

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

Which one of the following frequency meter is suitable for measuring radio frequency?

Description : Which one of the following frequency meter is suitable for measuring radio frequency?   (a) Vibrating reed frequency meter (b) Weston frequency meter (c) Electrical resonance frequency meter (d) Heterodyne frequency meter 

Last Answer : Which one of the following frequency meter is suitable for measuring radio frequency?   (a) Vibrating reed frequency meter (b) Weston frequency meter (c) Electrical resonance frequency meter (d) Heterodyne frequency meter 

What type of meter is used to measure current?

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

Last Answer : Ammeter

A Weston frequency meter is?

Last Answer : A Weston frequency meter is moving iron instrument.

In a Weston frequency meter, the magnetic axes of the two fixed coils are?

Last Answer : In a Weston frequency meter, the magnetic axes of the two fixed coils are perpendicular.

In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of?

Last Answer : In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of 0.5 Hz.

______ used to measure speech volume A. Volume meter B. Audio frequency meter C. Volume unit meter D. Speech meter

Description : ______ used to measure speech volume A. Volume meter B. Audio frequency meter C. Volume unit meter D. Speech meter

Last Answer : C. Volume unit meter

Radio frequency ranges from 30MHz to 1GHz and it is suitable for:

Description : Radio frequency ranges from 30MHz to 1GHz and it is suitable for:  a. Point to point transmission b. Omni directional transmission c. Local point to point transmission d. None of the above

Last Answer : Radio frequency ranges from 30MHz to 1GHz and it is suitable for: Local point to point transmission

To measure the speed of an approaching car a police officer shines – (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Description : To measure the speed of an approaching car a police officer shines – (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Last Answer : (3) radio waves on it Explanation: Radar, which stands for radio detection and ranging, is a system that uses reflected radio waves to detect objects and measure their distance and speed. For example, police use radar to calculate the speed of cars.

To measure the speed of an approaching car a police officer shines (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Description : To measure the speed of an approaching car a police officer shines (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Last Answer : radio waves on it

A reading of 120 is obtained when a standard inductor was connected in the circuit of a Q-meter and the

Description : A reading of 120 is obtained when a standard inductor was connected in the circuit of a Q-meter and the variable capacitor is adjusted to a value of 300 pF. A lossless capacitor of unknown value Cx is then connected in ... value of 200 pF. The value of Cx in pF is  A) 100 B) 200 C) 300 D) 500

Last Answer : A reading of 120 is obtained when a standard inductor was connected in the circuit of a Q-meter and the variable capacitor is adjusted to a value of 300 pF. A lossless capacitor of unknown value Cx is ... when the variable capacitor is readjusted to a value of 200 pF. The value of Cx in pF is 100 

A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned

Description : A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carrier current capacity is 50 mA. The torque on the coil is

Last Answer : A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carrier current capacity is 50 mA. The torque on the coil is 200µNm

The meter which does not have any component in it to provide control torque is

Description : The meter which does not have any component in it to provide control torque is (A) Electrodynamometer for current measurement (B) Electrodynamometer for voltage measurement (C) Electrodynamometer for power measurement. (D) Electrodynamometer for power factor measurement.

Last Answer : The meter which does not have any component in it to provide control torque is Electrodynamometer for power factor measurement.

An induction type energy meter is found to run fast. Correction for this error can be made by

Description : An induction type energy meter is found to run fast. Correction for this error can be made by  (A) Over-load compensation. (B) Voltage compensation. (C) Moving the brake magnet away from the centre of the disc. (D) Moving the brake magnet towards the centre of the disc.

Last Answer : An induction type energy meter is found to run fast. Correction for this error can be made by Moving the brake magnet away from the centre of the disc.

A 200 V, 5 A d.c. energy meter is tested at its marked ratings. The resistance of the pressure circuit is 8000 Ω

Description : A 200 V, 5 A d.c. energy meter is tested at its marked ratings. The resistance of the pressure circuit is 8000 Ω and that of current coil is 0.1 Ω. The power consumed when testing the meter with phantom loading with current circuit excited by a 6 V battery is (A) 2.5 W (B) 5 W (C) 32.5 W (D) 35 W

Last Answer : A 200 V, 5 A d.c. energy meter is tested at its marked ratings. The resistance of the pressure circuit is 8000 Ω and that of current coil is 0.1 Ω. The power consumed when testing the meter with phantom loading with current circuit excited by a 6 V battery is 35 W

Identify the instrument that does not exist (A) Dynamo-meter type ammeter (B) Dynamo-meter type

Description : Identify the instrument that does not exist (A) Dynamo-meter type ammeter (B) Dynamo-meter type wattmeter (C) Moving-iron voltmeter (D) Moving-iron wattmeter

Last Answer : Identify the instrument that does not exist (A) Dynamo-meter type ammeter (B) Dynamo-meter type wattmeter (C) Moving-iron voltmeter (D) Moving-iron wattmeter

The principle of operation of Q-meter is based on

Last Answer : The principle of operation of Q-meter is based on Series resonance.

An ideal meter should have

Last Answer : An ideal meter should have Absolutely no effect on the circuit being measured.

In a moving iron meter, the deflecting torque is proportional to

Last Answer : In a moving iron meter, the deflecting torque is proportional to Square of the current through the coil.

Why is a MISC meter not recommended for DC measurement?

Last Answer : MISC meter not recommended for DC measurement because the error is high due to the hysteresis effect.

For high accuracy the meter has

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

A moving coil instrument is used as an ohmmeter. The indicating scale of the meter will be

Last Answer : A moving coil instrument is used as an ohmmeter. The indicating scale of the meter will be Hyperbolic.

It is desired to convert a 0-1000A meter movement, with an internal ...

Description : It is desired to convert a 0-1000A meter movement, with an internal resistance of 100 ohms, into a 0-100mA meter. The required value of shunt resistance is about 

Last Answer : It is desired to convert a 0-1000A meter movement, with an internal resistance of 100 ohms, into a 0-100mA meter. The required value of shunt resistance is about 1 ohms.

In an energy meter braking torque is produced to

Last Answer : In an energy meter braking torque is produced to maintain steady speed and equal to driving torque

Various adjustments in an energy meter include

Last Answer :  Various adjustments in an energy meter include light load or friction, lag and creep, overload and voltage compensation.

Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to

Last Answer : Two holes in the disc of energy meter are drilled at the opposite sides of the spindle to eliminate creeping at no load

In a dynamo-meter type of moving coil instrument a swamping resistance is provided in order to:

Last Answer : In a dynamo-meter type of moving coil instrument a swamping resistance is provided inorder to: Provide equal time constant for moving coil and fixed coil, when used for ac measurement

For measuring an unknown electrical quantity, select the meter with

Last Answer : For measuring an unknown electrical quantity, select the meter with Highest range and work down.

In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at?

Last Answer : In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at 120°.

In a single phase power factor meter the phase difference between the currents in the two pressure coils is?

Last Answer : In a single phase power factor meter the phase difference between the currents in the two pressure coils is exactly 90°.

The two pressure coils of a single phase power factor meter have?

Last Answer : The two pressure coils of a single phase power factor meter have the same dimensions and the same number of turns.

A power factor meter has?

Last Answer : A power factor meter has one current circuit and two pressure circuits.

The adjustment of position of shading bands, in an energy meter is done to provide?

Last Answer : The adjustment of position of shading bands, in an energy meter is done to provide friction compensation.

The multiplier and the meter coil in a voltmeter are in?

Last Answer : The multiplier and the meter coil in a voltmeter are in series.

The household energy meter is?

Last Answer : The household energy meter is an integrating instrument.

An induction meter can handle current up to?

Last Answer : An induction meter can handle current up to 100 A.

A moving-coil permanent-magnet instrument can be used as flux-meter?

Last Answer : A moving-coil permanent-magnet instrument can be used as flux-meter by eliminating the control springs.

Hay’s Bridge is suitable for the measurement of:

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

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

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

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

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

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.

Megger is used to measure

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

A VTVM can be used to measure

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.

A d.c. potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of

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

The minimum number of wattmeter(s) required to measure 3-phase, 3-wire balanced or unbalanced power is

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

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 Pyrheliometer is an instrument to measure :

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 

Piezoelectric Transducer is used to measure

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

Last Answer : Piezoelectric Transducer is used to measure displacement 

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