At what point on a meter movement are the most accurate  readings taken?

1 Answer

Answer :

Midscale.

Related questions

Description : In preparing to take insulation resistance readings on a main generator, the windings should be grounded for about 15 minutes prior to the test to _____________. A. allow accurate zeroing of the meter ... the windings D. help the windings to cool to the same temperature as the ground test connection

Last Answer : Answer: C

Description : When taking resistance readings with a VOM, you will obtain the most accurate readings at or near what part of the scale?

Last Answer : Midscale.

Description : Besides setting up the meter for expected voltage ranges, what must be strictly observed when taking dc voltage readings?

Last Answer : Polarit

Description : Which is more accurate, the bridge- or reactance-type meter?

Last Answer : Bridge type.

Description : Are psychic readings accurate?

Last Answer : No, most psychics are in the business just for money. They could say anything and make you believe it. No one knows the future, and it'd be better to just live life on your own than letting a psychic make you worry.

Description : Which of the following statements concerning monitoring techniques in the intensive care unit are true? A. Pulmonary artery and pulmonary capillary wedge pressure readings should be made ... clinical conditions not associated with tissue hypoxia, including liver disease and hypermetabolic states.

Last Answer : Answer: BD DISCUSSION: Many different monitoring techniques may be used to assess the adequacy of therapy for shock. The pulmonary artery catheter can provide important hemodynamic and oxygen ... also be seen with liver disease, toxin ingestion, and hypermetabolic states not associated with shock

Description : Electrostatic forces in high voltage circuits cause indicating instruments to give ____________. A. parallax readings B. highly intuitive readings C. highly accurate readings D. inaccurate readings

Last Answer : Answer: D

Description : In which of the situations listed will a megohmmeter give the most accurate readings? A. While the machine is in operation. B. While the machine is discharging static electricity. C. Immediately prior to ... machine. D. When the machine has been shut down and grounded for a period of 15 minutes.

Last Answer : Answer: D

Description : What is the only use for the voltage sensitive meter movement?

Last Answer : High-voltage measurement.

Description : What type of meter movement reacts to voltage rather than current?

Last Answer : Electrostatic.

Description : How is it possible to use a current sensitive meter movement to measure voltage?

Last Answer : Since the resistance of a meter movement remains the same as the pointer is deflected, the amount of current through the movement is proportional to the voltage applied. Therefore, only the scale of the movement must be changed.

Description : What value does a meter movement react to (actually measure) when measuring ac?

Last Answer : Average value.

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 : 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 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 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 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 is the limiting factor as to the amount of current an electrodynamometer meter movement can handle?

Last Answer : Size of spiral conducting.

Description : What components in an electrodynamometer-type meter movement produce the magnetic field?

Last Answer : Fixed coils.

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 components in an electrodynamometer-type meter movement produce the magnetic field?

Last Answer : Fixed coils.

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 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?

Last Answer : Hairspring.

Description : What component of the D’Arsonval meter movement completes the circuit for current flow to the coil?

Last Answer : Hairspring.

Description : Before using a volt-ohmmeter to measure resistance readings, you should _____________. A. replace all batteries B. test the insulation resistance of the leads C. make sure the test leads do not touch D. hold the leads together and 'zero' the meter

Last Answer : Answer: D

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

Last Answer : Answer: D

Description : The average mean velocity of a stream having depth h, may be obtained by taking the average of the readings of a current meter at a depth of (A) 0.1 h and 0.9 h (B) 0.2 h and 0.8 h (C) 0.3 h and 0.7 h (D) 0.4 h and 0.6 h

Last Answer : Answer: Option B

Description : To determine the discharge at a section in a stream from its rating curve, the required data are (i) Slope of water surface at the section (ii) Stage at the section (ii) Current meter readings at the section The correct ... ) (i) and (ii) (B) (ii) and (iii) (C) Only (ii) (D) Only (iii)

Last Answer : Answer: Option C

Description : Annual total energy & production chart smoothens out ____ in energy timing of meter readings. a) Errors b) Efficiency c) Accuracy. d) Repeatability

Last Answer : errors

Description : The two watt meters measurement the ratio of two meter readings is –(1-sqrt3):( 1+sqrt3) then the power factor is a) 1 b) 0.866 c) 0.707 d) 0

Last Answer : Ans: 0.707

Description : Power (P) in a 3 phase circuit with two watt meters at unity power factor is (W1 & W2 = watt meter readings)

Last Answer : Power (P) in a 3 phase circuit with two watt meters at unity power factor is P = W1 + W2 (W1 & W2 = watt meter readings)

Description : The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is (A) zero (B) 0.5 (C) between zero and 0.5 (D) between 0.5 and unity

Last Answer : The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is between 0.5 and unity

Description : Transmitter power readings are most often referenced to what power level?

Last Answer : 1 milliwatt.

Description : Air gap readings should be taken on electrical generation machinery periodicly to _________. I. determine the need for cleaning II. check the condition of the bearings A. I only B. II only C. both I and II D. neither I or II

Last Answer : Answer: B

Description : Air gap readings for electrical generating equipment should be taken periodicly. This is to _______. I. determine the condition of the bearings II. prevent damage to the rotor and stator A. I only B. II only C. both I and II D. neither I or II

Last Answer : Answer: C

Description : Air gap readings should be taken on electrical generation equipment periodicly to ________. I. check machine effeciency II. determine the need for cleaning A. I only B. II only C. both I and II D. neither I or II

Last Answer : Answer: D

Description : Air gap readings should be periodicly taken for electrical generation equipment. The best tool to use to take these measurements is a ___________. A. cloth (non-metalic) tape measure B. dial indicator C. inside micrometer D. tapered, long blade, feeler gage

Last Answer : Answer: D

Description : Air gap readings should be taken periodicly on electrical generation equipment to __________. A. determine the amount of varnish that can be applied to correct insulation problems B. determine the ... field coil bolts and correct lateral adjustment of the field coils D. increase machine efficiency

Last Answer : Answer: B

Description : When you check the specific gravity of the battery electrolyte with a hydrometer, it should be kept in mind that ____________. A. the battery is fully charged when the indicator floats low in ... taken immediately after water is added to the cell D. temperature has no effect on hydrometer readings

Last Answer : Answer: C

Description : As a general rule, the first troubleshooting action to be taken in checking faulty electric control devices is to _____________. A. draw a one line diagram of the circuitry B. test all fuses and measure the line voltage C. take megger readings D. insulate the apparatus from ground

Last Answer : Answer: B

Description : On all instruments like measuring cylinder, pipette and burette, readings are always taken at the bottom of the meniscus of liquid. This is not true for liquids like A. Oil B. Ink C. Mercury D. Seawater

Last Answer : Mercury

Description : Dumpy level is most suitable when (A) The instrument is to be shifted frequently (B) Fly levelling is being done over long distance (C) Many readings are to be taken from a single setting of the instrument (D) All of the above

Last Answer : (C) Many readings are to be taken from a single setting of the instrument

Description : Pick up the correct statement from the following: (A) The lines of sight while observing back sight and fore sight lie in the same horizontal plane (B) The staff readings are measurements made ... readings are taken, coincides with the level surface through the telescope axis (D) All the above

Last Answer : (D) All the above

Description : Dumpy level is most suitable when (a) The instrument is to be shifted frequently (b) Fly leveling is being done over long distance (c) Many readings are to be taken from a single setting of the instrument* (d) All of the above

Last Answer : (c) Many readings are to be taken from a single setting of the instrument*

Description : What method of zeroing a synchro is perhaps the fastest but NOT necessarily the most accurate?

Last Answer : . The electrical lock method.

Description : What type of ranging circuit is most often used with a radar that requires extremely accurate range data?

Last Answer : Range gate or range step.

Description : Which of the eight methods for encoding digital data onto magnetic tape is most widely used because it’s accurate, simple, and reliable?

Last Answer : Non-return-to-zero (NRZ) encoding.