Description : What ammeter is mostly used in measuring high frequency currents?
Last Answer : thermocouple
Description : ___ ammeter is used to measure high-frequency currents.
Description : In a moving coil ammeter, a ___ is connected in series with the coil to compensate for temperature variations
Last Answer : swamping resistors
Description : Error in ammeter reading is due to
Last Answer : insertion
Description : Decreasing the value of the shunt resistor of an ammeter, it current measuring capability
Last Answer : increases
Description : To increase the measuring capability of a moving-iron ac ammeter, a __ should be used.
Last Answer : different number of turns of coils
Description : Which is the best type of ammeter movement?
Last Answer : D'Arsonval
Description : Which of the ammeter below has no insertion error?
Last Answer : clamp-meter
Description : An ammeter with an internal resistance of 50 ohm(s) is used to measure a current thorugh a lod resistor Rl = 1 kohm(s). Determine the percentage error of the reading due to ammeter insertion.
Last Answer : 50/(50+1k)*100 = 4.76%
Description : Calculate the shunt resistance needed to increase the FSD of an ammeter 5 times if the meter resistance is 1kohm
Last Answer : 250ohms
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
Description : A dynamometer instrument is mainly used as a/an
Last Answer : wattmeter
Description : An instrument of device having recognized permanent of stable value that is used as a reference.
Last Answer : standard instrument/device
Description : The scale of a hot-wire instrument is a/an ___function
Last Answer : squared
Description : Moving-iron instrument has a/an scale
Description : What is an electronic instrument capable of showing on screen and maybe on print, relative spacing of transmitter carriers, their sidebands and harmonics?
Last Answer : Spectrum Analyzer
Description : A device or instrument, which delivers signals of precise frequency and amplitude, usually over a wide range
Last Answer : signal generators
Description : When both deflecting and controlling torque act, the pointer of an indicating instrument comes to
Last Answer : rest
Description : The smallest change in a measured variable to which an instrument will respond.
Last Answer : resolution
Description : In RF and microwave system, what instrument is used to measure the incidental and reflected signals?
Last Answer : reflectometer
Description : This instrument measures temperatures by electric means, especially temperatures beyong the range of mercury thermometers
Last Answer : pyrometer
Description : Which instrument is the most sensitive?
Last Answer : permanen-magnet moving coil
Description : A device or instrument able to generate noise with accurate voltage for test purposes
Last Answer : noise generator
Description : Resistance measuring instrument particularly used in determining the insulation resistance
Last Answer : Megger/Megaohmmeter
Description : What is that instrument used for measuring the strength and direction of magnetic fields?
Last Answer : magnetometer
Description : Majority of analog measuring instrument utilizes one of the following effects.
Last Answer : magnetic effect
Description : Current range extension in moving coil instruments can be achieved by placing a ___ in shunt with the instrument.
Last Answer : low resistance resistor
Description : Determine which is not a dynamic instrument
Last Answer : Logic
Description : What do you call of an instrument that depends for its operation on the reaction between magnetic flux set up by currents in fixed windings and other currents set up by electromagnet induction in movable conducting parts?
Last Answer : induction instrument
Description : As the deflection of the moving system increases, the controlling torque in an indicating instrument.
Description : An electro pyrometer is an instrument used to measure?
Last Answer : high temperatures
Description : An instrument used to detect and measure the presence of electrical current is generally called
Last Answer : galvanometer
Description : An indicating instrument whose movable coils rotate between two-stationary coils, usually used as wattmeter
Last Answer : electrodynamometer
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
Description : Permanent-magnet moving coil instrument can be used in
Last Answer : dc work only
Description : Basically, a PMMC instrument can be used only in
Last Answer : dc measurements
Description : Another name for PMMC instrument
Description : A force in analog instrument which quickly brings the moving system to rest in its final position.
Last Answer : damping force
Description : If the pointer of an indicating instrument is in motion, then what opposes deflecting torque?
Last Answer : damping and controlling torque
Description : What is the force acting on the pointer of an indicating instrument when it is in motion?
Last Answer : controlling, damping and deflecting torques
Description : What is this instrument or circuit that has four or more arms, by means of which one or more of the electrical constance of an unknown component may be measured?
Last Answer : bridge
Description : Dynamometer type instrument can be used for
Last Answer : both dc and ac works
Description : What is the reason why the scale of a permanent-magnet moving coil instrument is uniform?
Last Answer : because it is spring controlled
Description : Indicating instrument is assumed to be most accurate at what part of the scale?
Last Answer : at half or full
Description : An instrument in which the magnitude of the measured quantity is indicated by means of pointer.
Last Answer : analog instrument
Description : What type of instrument is the watt-hour meter?
Last Answer : an integrating
Description : An instrument used for measuring the amount of current flowing in a circuit.
Last Answer : ammeter
Description : The pointer of an indicating instrument is generally made of
Last Answer : aluminum
Description : What is the typical full-scale deflection current of a moving coil instrument?
Last Answer : 50mA
Description : What kind of voltage is applied to the horizontal deflection plates of the oscilloscope?
Last Answer : sweep voltage