Description : ___ ammeter is used to measure high-frequency currents.
Last Answer : thermocouple
Description : A measure of consistency or repeatability of measurements is called. ___
Last Answer : precision
Description : A dynamometer instrument is mainly used as a/an
Last Answer : wattmeter
Description : Where can we used the dynamometer?
Last Answer : dc and ac
Description : Dynamometer type instrument can be used for
Last Answer : both dc and ac works
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 : In an oscilloscope, ___ adjusts the brightness of the spot by chaning the current on the control grid.
Last Answer : intensity control
Description : The time interval that a waveform is high (or low) is the ___ of the signal.
Last Answer : pulse width
Description : High sensitive DC voltmeter provides accurate reading when measuring ___ circuits.
Last Answer : high resistance
Description : ___ has a series RC combination in one arm and a parallel RC combination in the adjoining arm and used as a notch filter in harmonic distortion analyzer.
Last Answer : wein bridge
Description : When the capacitors of a Wein Bridge are replaced by inductors, the bridge becomes ___
Last Answer : Wein Inductance Bridge
Description : Induction type instruments are mostly used as ___
Last Answer : watt-hour meter
Description : For amplitude measurements, ___ scale is calibrated in either volts per centimeter (V/cm), or millivolts per centimeter (mV/cm)
Last Answer : vertical
Description : When the meter is unsufficiently damped, it is considered as ___
Last Answer : underdamped
Description : A wheatstone bridge is balanced if ___
Last Answer : the ratio of resistors on one side of the bridge equals the ratio of resistors on the other side
Description : In a moving coil ammeter, a ___ is connected in series with the coil to compensate for temperature variations
Last Answer : swamping resistors
Description : In VTVMS, ___ refers to the smallest signal that can be reliably measured
Last Answer : sensitivity
Description : The time interval between pulses is called ___
Last Answer : pulse delay
Description : ___ is used for measuring medium Q coils
Last Answer : Maxwell Bridge
Description : Error in voltmeter is due to ___
Last Answer : loading
Description : For time measurements, ___ scale of the scope is used.
Last Answer : horizontal
Description : The ___ provides the visual display showing the form of the signal applied as a waveform on the front screen of a cathode ray oscilloscope
Last Answer : CRT
Description : ___ meter is the most sensitive
Last Answer : 1uA
Description : An instrument used to detect and measure the presence of electrical current is generally called
Last Answer : galvanometer
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 : 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 : What bridge is used to measure high-Q inductors? (Q>10)
Last Answer : hay bridge
Description : Types of oscilloscopes that are able to retain the display for a longer period of analysis. This display is retained by the use of flood gun.
Last Answer : storage oscilloscope
Description : A device or instrument able to generate noise with accurate voltage for test purposes
Last Answer : noise generator
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 )
Description : An electrodynamic meter used t measure power
Description : In RF and microwave system, what instrument is used to measure the incidental and reflected signals?
Last Answer : reflectometer
Description : A type of photometer used to measure reflection.
Description : Bridge used to measure both inductive and capacitive impedances at higher frequencies
Last Answer : radio-frequency bridge
Description : A bridge used to measure small resistances
Last Answer : Kelvin Bridge
Description : An electro pyrometer is an instrument used to measure?
Last Answer : high temperatures
Description : A device used to mechanically measure the output power of a motor
Last Answer : dynamometer
Description : How much current does an electrostatic voltmeter require through it to operate?
Last Answer : zero current
Description : It is the reciprocal of the full-scale current of a meter
Description : What is the device, which depends on the action of a movalbe permanent magnet, in aligning itself in the resultant field produced by a fixed permanent magnet or current- carrying coils whose axes are displaced by a fixed angle?
Last Answer : moving-magnet instrument
Description : A meter has a full-scale current of 50uA, what is its sensitivity?
Last Answer : Is=1/50uA=20kohm/V
Description : Decreasing the value of the shunt resistor of an ammeter, it current measuring capability
Last Answer : increases
Description : All voltmeters except one of the following are operated by the passage of current
Last Answer : electrostatic
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
Description : What is the basic unit for measuring current flow?
Last Answer : ampere
Description : An instrument used for measuring the amount of current flowing in a circuit.
Last Answer : ammeter
Description : What is the typical full-scale deflection current of a moving coil instrument?
Last Answer : 50mA
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.
Description : What does a dynamometer measure?
Last Answer : A dynamometer is used to measure force, torque or power of a engine. A dynamometer also can measure the torque and power needed to power a given driven machine.