Description : What is the only use for the voltage sensitive meter movement?
Last Answer : High-voltage measurement.
Description : What modification is made to the D’Arsonval meter movement to enable the meter to measure voltage?
Last Answer : A multimeter (high resistance) is placed in series with the coil of the meter.
Description : What type of meter movement reacts to voltage rather than current?
Last Answer : Electrostatic.
Description : What value does a meter movement react to (actually measure) when measuring ac?
Last Answer : Average value.
Description : Which of the following precautions should be taken when troubleshooting various power circuits using a common solenoid-type mechanical voltage tester (wiggins)? A. Never use this tester on circuits greater ... voltage expected in the circuit in order to prevent damage from an off-scale reading.
Last Answer : Answer: A
Description : __________ circuit is most commonly used to measure strain with the help of a strain gauge. (A) Ballast (B) Voltage balancing potentiometric (C) Simple current sensitive (D) None of these
Last Answer : Option B
Description : What is the effect of current flow through the coil in a d’Arsonval meter movement?
Last Answer : A magnetic field is generated around the coil and the attraction of this field with the permanent magnet causes the coil to move
Description : What is the limiting factor as to the amount of current an electrodynamometer meter movement can handle?
Last Answer : Size of spiral conducting.
Description : What component of the D’Arsonval meter movement completes the circuit for current flow to the coil?
Last Answer : Hairspring.
Description : If reading AC current with the illustrated device and unsure of the range as a precaution , the first step should be to _________. EL-0047 A. secure power and test for voltage B. disconnect the ... resistance and use Ohm's law to calculate current D. unable to safely measure current with the device
Description : Instruments of Measure The device used ' for the measurement of current, voltage and resistance is: A. AVO meter B. Galvanometer C. Ammeter D. Ohm meter
Last Answer : ANSWER: A
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 : List three meter movements that can measure either ac or dc without the use of a rectifier.
Last Answer : Electrodynamic, moving vane, and hot-wire or thermocouple.
Description : How can a d’Arsonval meter movement be adapted for use as an ac meter?
Last Answer : By the use of a rectifier
Description : What are two methods used to damp a meter movement?
Last Answer : As the coil moves through the field of the permanent magnet, a current is induced in the coil opposing the movement of the coil; and a vane can be attached to the coil and placed in the airtight chamber so that the movement of the vane opposes the movement of the coil.
Description : What are three functions of the hairsprings in a d’Arsonval meter movement?
Last Answer : To return the pointer to its rest position when there is no current flow; to oppose the coil movement when there is current flow; to provide electrical connections for the coil.
Description : What type of meter movement is the d’Arsonval meter movement?
Last Answer : A permanent-magnet moving-coil meter movement used in most electrical and electronic meters.
Description : What components in an electrodynamometer-type meter movement produce the magnetic field?
Last Answer : Fixed coils.
Description : What structurally large, low-resistance conductor is connected in parallel with the meter movement to prevent damage?
Last Answer : Shunt.
Description : What advantage is gained by using pole pieces with curved faces in the D’Arsonval meter movement?
Last Answer : Two-position and three-position.
Description : What component supplies restoring force to the coil of the D’Arsonval meter movement?
Description : At what point on a meter movement are the most accurate readings taken?
Last Answer : Midscale.
Description : Why will a meter indicate more voltage at the battery terminal when the battery is out of a circuit than when the battery is in a circuit?
Last Answer : The internal (source) resistance of the battery will drop some of the voltage
Description : Besides setting up the meter for expected voltage ranges, what must be strictly observed when taking dc voltage readings?
Last Answer : Polarit
Description : A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up to 300 V, the external resistance to be connected in series with the instrument is (A) 9997 Ω (B) 10000 Ω (C) 997 Ω (D) 10003 Ω
Last Answer : A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up to 300 V, the external resistance to be connected in series with the instrument is 9997 Ω
Description : The only use of voltage senstive meter movement
Last Answer : very low voltage measurement
Description : (True or False) The larger the current required to produce full-scale deflection of the meter coil, the better the sensitivity of the meter.
Last Answer : False.
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
Description : In order to check the performance of a transistor removed from its circuit, the instrument to be used should be a/an ____________. A. voltmeter or transistor tester B. impedance meter C. ohmmeter or transistor tester D. sensitive potentiometer
Last Answer : Answer: C
Description : ___ meter is the most sensitive
Last Answer : 1uA
Description : Which are more sensitive to alignment errors, single mode or multimode fibers?
Last Answer : Single mode.
Description : List two causes of damage to ESD-sensitive electronic components
Last Answer : Esd, improper stowage, and improper handling.
Description : Why do earth terminals require highly sensitive receivers?
Last Answer : To overcome satellite transmitter low power and permit extraction of the desired information from the received signal.
Description : The cutoff wavelength of matched-clad and depressed-clad single mode fibers varies according to the fiber's radius of curvature and length. The cutoff wavelength of which single mode fiber type is more sensitive to length
Last Answer : Depressed-clad.
Description : Why are digital multimeters well suited for testing sensitive devices?
Last Answer : The current flow through the component is limited to 1 milliamp.
Description : What type of meter is used to measure current?
Last Answer : Ammeter
Description : The basic meter movement responds to the flow of current through its coil. Therefore, this meter movement may be used as a/an _____________. A. voltmeter by placing a resistance in parallel with the ... in parallel with the coil D. ammeter by placing a low resistance in parallel with the coil
Last Answer : Answer: D
Description : A switchboard for an AC electrical system requires the use of which of the following devices? A. Frequency meter. B. Ohmmeter. C. Induction voltage regulator. D. Current transformer governor.
Description : When troubleshooting electronic equipment, you should use a high impedance multimeter ________________. A. to prevent excess current flow through the meter that would damage it B. for AC measurements only ... being tested D. so as not to load down the circuit and obtain erroneous voltage readings
Description : The following are true about corneal sensation: a. the sensation is greatest at the apex and diminishes towards the limbus. b. the temporal half of the cornea is more sensitive than the ... c. the Bonnet-Cochet aesthesiometer gives quantitative measure of the degree of hypoaesthesia d. all above
Last Answer : all above
Description : Monitoring of blood levels of diuretic drugs is not practised because: A. No sensitive methods for measuring blood levels of diuretics are available B. It is easier to measure the effect of these ... Response to diuretics is not related to their blood levels D. Diuretics need activation in the body
Last Answer : B. It is easier to measure the effect of these drugs
Description : The device used ' for the measurement of current, voltage and resistance is: A. AVO meter B. Galvanometer C. Ammeter D. Ohm meter
Description : The illustrated circuit is a wheatstone bridge. If the meter 'G' reads 0 with the switch closed then ________. EL-0024 A. the current through R1 - R2 is equal to the current through R3 - Rx B. the voltage ... of E C. the resistance of Rx is equal to the resistance of R2 D. all the above are true
Description : When troubleshooting electronic equipment, the FIRST step to be taken before testing the circuit voltage is to _________. A. set the meter to the lowest range B. check the voltage supply from the power source C. remove the suspected component D. check the current flow through the circuit
Last Answer : Answer: B
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