A meter when __ will become insensitive to small signals

A meter when __ will become insensitive to small signals
by

1 Answer

Answer :

overdamped
by

Related questions

When the vertical input is 0V, the electron beam may be position at the __ of the screen.

Description : When the vertical input is 0V, the electron beam may be position at the __ of the screen.

Last Answer : vertical center

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

The interval of a pulse from start to end is the __ of the pulse

Description : The interval of a pulse from start to end is the __ of the pulse

Last Answer : period

An oscilloscope provides easy measurement of __ values.

Description : An oscilloscope provides easy measurement of __ values.

Last Answer : peak to peak

To increase the measuring capability of a moving-iron ac ammeter, a __ should be used.

Description : To increase the measuring capability of a moving-iron ac ammeter, a __ should be used.

Last Answer : different number of turns of coils

On a simple ohmmeter, the 0 ohm(s0 mark is located __ of the scale

Description : On a simple ohmmeter, the 0 ohm(s0 mark is located __ of the scale

Last Answer : at far right

A certain pulse measures 10ms and has a period of 50ms. The duty cycle is __

Description : A certain pulse measures 10ms and has a period of 50ms. The duty cycle is __

Last Answer : 10ms/50ms = 20%

A device or instrument, which delivers signals of precise frequency and amplitude, usually over a wide range

Description : A device or instrument, which delivers signals of precise frequency and amplitude, usually over a wide range

Last Answer : signal generators

What do you call an oscilloscope that uses sampling techniques in processing signals having frequencies beyond its normal capabilities?

Description : What do you call an oscilloscope that uses sampling techniques in processing signals having frequencies beyond its normal capabilities?

Last Answer : sampling oscilloscope

In RF and microwave system, what instrument is used to measure the incidental and reflected signals?

Description : In RF and microwave system, what instrument is used to measure the incidental and reflected signals?

Last Answer : reflectometer

It consists of a diode and an opamp and has the ability to clip low level signals

Description : It consists of a diode and an opamp and has the ability to clip low level signals

Last Answer : precision diode

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

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

Insulation resistance is measured by which meter?

Description : Insulation resistance is measured by which meter?

Last Answer : megger

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 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

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

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

___ 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

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 bridge used to measure small resistances

Description : A bridge used to measure small resistances

Last Answer : Kelvin Bridge

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. 

What is a thyristor ? What are its uses ?

Description : What is a thyristor ? What are its uses ?

Last Answer : A thyristor is a special kind of semi conductor device that uses internal feedback to produce latching action. Use : Used for controlling large amounts of load power in motors, heaters, lighting systems etc ... the latches like a open switch. This latch will always stay in open or close position.  

What does a transmitter output start from 3-15 psi or (0.2 - 1 Kg/Cm2) or 4 - 20 ma. etc. ?

Description : What does a transmitter output start from 3-15 psi or (0.2 - 1 Kg/Cm2) or 4 - 20 ma. etc. ? 

Last Answer : The transmitter output stance from what is known as "live zero". This system has specific advantages : 1. The systems automatically alarms when the signal system becomes inoperative. ... transmitter operating, but transmitting a zero measurement and a failure, in the signal system. 

What are Intrinsically safe system ?

Description : What are Intrinsically safe system ?

Last Answer : Intrinsic safety is a technique for designing electrical equipment for safe use in locations made hazardous by the presence of flammable gas or vapors in air. "Defn. :" Intrinsically safe circuit is ... , unfortunately, been adopted in all countries. However two sets of codes in common use are.  

What is feed back control ? What is feed forward control ? Discuss its application ?

Description : What is feed back control ? What is feed forward control ? Discuss its application ?

Last Answer : Feed back control: Feed back control involves the detection of the controlled variable and counteracting of charges its it's value relative to set point, by adjustment of a manipulated ... controller for a particular process application, two factors time and gain must be considered.    

What is Furnace Draft control ?

Description : What is Furnace Draft control ? 

Last Answer : Balanced draft boilers are generally used negative furnace pressure. When both forced draft and induced draft are used together, at some point in the system the pressure will be the same as that of atmosphere. ... have is a very slight (about 0.1" H20 ) negative pressure of the top of furnace.  

What is the difference the a wheatstone bridge and a potentiometer ?

Description : What is the difference the a wheatstone bridge and a potentiometer ?

Last Answer : The difference between a potentiometer and a wheatstone bridge measuring instrument is that potentiometer is a voltage measuring instrument and wheatstone bridge is a current measuring instrument. 

What is the specialty of thermocouples lead wires ?

Description : What is the specialty of thermocouples lead wires ?

Last Answer : They should be of the same material as the thermocouple.  

What are skin temperature thermocouples ?

Description : What are skin temperature thermocouples ? 

Last Answer : Skin thermocouples are those which are directly connected to the process without any thermowell. Used for measuring the skin temperature of heaters furnaces, flue gas etc.  

What type of sensing element would you use to measure very low temperature ?

Description : What type of sensing element would you use to measure very low temperature ?

Last Answer : The sensing element used for measuring very low temperature is R. T. D. ( Resistance Temperature Detector )

How will you calibrate a temp. recorder using a potentiometer ?

Description : How will you calibrate a temp. recorder using a potentiometer ?

Last Answer : Connect the potentiometer output to the input of temp. recorder. 1. Connect the ( +ve ) to the ( +ve ) and ( -ve ) to the ( -ve ). 2. If ambient compensation is provided ... ambient temp. millvolts to the corr. input millvolts measured. Find out from the chart for the corresponding temperature. 

Why are Thermowells used ?

Description : Why are Thermowells used ?

Last Answer : In numerous application it is neither desirable nor practical to expose a temperature sensor directly to a process material. Wells are therefore used to protect against damage corrosion, erosion, abrasion and high pressure processes. A ... 3. Monel. 4. Alloy steal. 5. Hastelloy 'C'.

Why is a converter used in a temp. recorder ?

Description : Why is a converter used in a temp. recorder ? 

Last Answer : The converter is designed to convert D. C. input voltage into an A. C. input voltage proportional in amplitude to the input.