Is it considered safe for a person to touch any energized  low-voltage conductor with the bare hand?

1 Answer

Answer :

NEVER! All energized electric circuits should be considered  potentially dangerous.

Related questions

Description : If a magnetic controller contact fails to pick up when the operating coil is energized, one possible cause may be _______________. A. low spring pressure B. low voltage to the coil C. the residual magnetism of the contact faces D. dirty contact faces

Last Answer : Answer: B

Description : To test fuses in an energized circuit, you should use a ____________. A. low voltage light bulb B. megohmmeter C. voltmeter D. resistance meter

Last Answer : Answer: C

Description : The illustrated motor fails to start and gives a loud hum when the start button is depressed, your first action should be to __________. EL-0007 A. disassemble the motor to fix the centrifical ... D. hold the 'M' contactor closed by hand while wearing electrical safety gloves to get motor started

Last Answer : Answer: B

Description : When the master switch for the winch shown in the illustration is in the 'off' position, and the line & safe switches are closed, which of the listed relays should be energized? EL-0102 A. 'DB' & '2T' B. 'DB' & '4M' C. 'FR-B.O.' & 'LV' D. '1M' & '1A'

Last Answer : Answer: C

Description : What's something that you would never touch with your bare hands?

Last Answer : Ungrounded electrical wiring. Human babies.

Description : I like to wear socks to bed. Do my bare feet have to touch the Earthing bed sheet?

Last Answer : It is A. It is best to have your bare feet in contact wit best to have your bare feet in contact with the gro h the grounded sheet. The Earth's energy is unded sheet. The ... feet warm up your feet warm up naturally from improved circulati naturally from improved circulation when you sleep grounded.

Description : Which of the following precautions should be taken when a blown fuse, rated at 10 amperes, is replaced? A. Short out the fuse before removing it from the circuit. B. Use needle-nose pliers to ... D. Fuses of 10 ampere rating and less are virtually harmless when energized and may be handled freely.

Last Answer : Answer: C

Description : When testing for blown fuses in a three-phase supply circuit to a motor, you should first ___________________. A. apply the megger across the tops of the line fuses B. apply an ammeter diagonally across ... of the line fuses D. ensure the circuit is de-energized, and then use a continuity tester

Last Answer : Answer: D

Description : When troubleshooting a motor controller, all indications are that a relay coil should be energized. If there were no magnetic pull, with rated voltage measured across the coil, the most probable cause ... open C. auxiliary contact in series with the coil is defective D. relay armature is stuck

Last Answer : Answer: A

Description : You are using a mechanical voltage tester to check the fuses in a three-phase circuit supplying an electric motor. For which of the following reasons must the motor be stopped during the test? A. ... circuit would be indicated by the voltage tester with the circuit energized. D. All of the above.

Last Answer : Answer: B

Description : The amount of voltage induced in the windings of an AC generator depends mainly on _____________. A. the number of field poles energized B. the speed at which the stator windings rotate through the magnetic field C. the strength of the magnetic field D. all of the above

Last Answer : Answer: C

Description : When a transmission line is energized, the wave that propagates on it is (a) current wave only (b) voltage wave only (c) both (a) and (b) (d) power factor wave only

Last Answer : (c) both (a) and (b)

Description : In the left hand rule, forefinger always represents (a) voltage (b) current (c) magnetic field (d) direction of force on the conductor

Last Answer : (c) magnetic field

Description : How would a compass react when placed close to a conductor carrying alternating current at a low frequency?

Last Answer : The compass needle would swing back and forth as the current changed from positive to negative.

Description : What structurally large, low-resistance conductor is connected in parallel with the meter movement to prevent damage?

Last Answer : Shunt.

Description : . A non-resonant line is a line that has no standing waves of current and voltage on it and is considered to be flat. Why is this true?

Last Answer : The load impedance of such a line is equal to Z0.

Description : At what voltage is a NICAD battery considered to be fully discharged?

Last Answer : At 1.1 volts.

Description : What is the filter called in which the low frequencies do not produce a useful voltage?

Last Answer : High-pass filter, low-frequency discriminator, or low-frequency attenuator.

Description : Does low ripple voltage indicate good or bad filtering?

Last Answer : Good.

Description : Does low ripple voltage indicate good or bad filtering?

Last Answer : Good.

Description : For what are the low voltage windings in a transformer used?

Last Answer : Filament voltage to the electron tubes.

Description : How much of the stripped length of a conductor should be tinned?

Last Answer : One-half the stripped length.

Description : For an electric field to exist at the surface of a conductor, the field must have what angular relationship to the conductor?

Last Answer : The field must be perpendicular to the conductors.

Description : What causes the current-carrying area at the center conductor of a coaxial line to be restricted to a small layer at the surface?

Last Answer : Skin effect.

Description : What is the purpose of the green conductor in a power tool or electrical appliance cable?

Last Answer : To prevent electrical shock to the operator in case there is an electrical short to the frame of the appliance or too.

Description : When would silver be used as a conductor in preference to copper?

Last Answer : When the need for conductivity is great enough to justify the additional expense.

Description : What determines whether a substance is a conductor or an insulator?

Last Answer : The number of valence electrons.

Description : An emf is generated in a conductor when the conductor is cut by what type of field?

Last Answer : Magnetic field.

Description : Compare the resistance of a conductor to that of an insulator.

Last Answer : Conductors have a very low resistance and insulators have a resistance that is so great that, for all practical purposes, they are nonconductors.

Description : State four advantages of copper over aluminum as a conductor.

Last Answer : It has higher conductivity, it is more ductile, it has relatively high tensile strength, and it can be easily soldered.

Description : State why it is important for you to consider the ambient (surrounding) temperature of a conductor when selecting wire size.

Last Answer : The heat surrounding the conductor is an important part of total conductor heating.

Description : List the three factors used to calculate resistance of a particular conductor in ohms.

Last Answer : Length, cross-sectional area, and specific resistance of a unit volume of the substance from which the conductor is made

Description : Define a square mil as it relates to a square conductor

Last Answer : The cross-sectional area of a square conductor with a side of 1 mil.

Description : Calculate the diameter in MILS of a conductor that has a diameter of 0.375 inch.

Last Answer : 375 mils (move the decimal three places to the right).

Description : If the insulation of a conductor was being measured in figure1-51 (A), would the reading indicate a good insulation?

Last Answer : Yes.

Description : What is the procedure for using a megger to check the insulation of a conductor?

Last Answer : Connect one lead to the insulation and one lead to the conductor. Turn the handcrank until it starts to slip. Note the reading

Description : How would the compass react if the alternating current through the conductor was a high frequency?

Last Answer : The compass needle would vibrate rapidly around the zero current point ac meter (magnetic north).

Description : If the amount of current in the conductor changes, what happens to the magnetic field around the conductor?

Last Answer : If the current increases the magnetic field increases; if the current decreases the magnetic field decreases.

Description : How does a compass react when placed close to a current carrying conductor?

Last Answer : The compass needle swings away from magnetic north and aligns itself with the magnetic field around the conductor

Description : Why does ice coverfed in sawdust ct melt quickly? (1) Sawdust does not allow the air to touch the ice (2) The water is absorbed by sawdust (3) Sawdust is a bad conductor of heat (4) Sawdust is good conductor of heat

Last Answer : (3) Sawdust is a bad conductor of heat Explanation: Ice needs to absorb heat energy to melt and become water (called latent heat of fusion). Since saw-dust is a poor conductor of heat, it takes ... required heat energy. This allows ice to remain in solid state for more time when packed in saw dust.

Description : In order to take a current reading with a 'clamp-on' ammeter, the instrument's jaws _________________. A. should remain open B. cannot touch the adjacent conductor C. must be fully closed D. will act as a transformer primary

Last Answer : Answer: C

Description : Which of the properties listed below would you expect a solution to have if it is an acid? w) It feels slippery to the touch. x) It tastes bitter. y) It turns red litmus blue. z) It is a conductor of electricity.

Last Answer : ANSWER: Z -- IT IS A CONDUCTOR OF ELECTRICITY.

Description : Why does ice covered in sawdust not melt quickly ? (1) Sawdust does not allow the air to touch the ice (2) The water is absorbed by sawdust (3) Sawdust is a bad conductor of heat (4) Sawdust is good conductor of heat

Last Answer : Sawdust is a bad conductor of heat

Description : How can I feel better and more energized, in general?

Last Answer : answer:You’re sleeping too much. Recommended sleeping hours is 7–8, you’re sleeping 9–10. Also, you might want to get a blood test to check for any deficiencies. I know someone who had the same issue and they were lacking iron in the blood which causes anemia.

Description : What Breakfast Makes You Feel Energized?

Last Answer : I have been having yogurt, fresh fruit and granola parfaits for breakfast lately and my energy level if pretty darn good! Bacon and eggs are yummy but make me feel sluggish compared the the parfait.

Description : After interacting with others, do you feel energized or do you need time alone to recharge your batteries?

Last Answer : They drain me more often than not. I am just this side of introvert.

Description : Pleasant or unpleasant? What type of feeling gets you energized?

Last Answer : Anger can get me to organize and toss junk like nothing else can.

Description : Do you wake up in the morning refreshed and energized?

Last Answer : Nope! But I feel fine anyway!

Description : ______rays are highly energized electrons.

Last Answer : ______rays are highly energized electrons.

Description : As shown in the illustration, once the "LV" relay is energized for operation, what contacts must remain closed to maintain the "LV" relay energized when the control lever is moved away from the "off" or "stop" ... . B. Reset contacts. C. Upper set of "LVa" contacts. D. Lower set of "LVa" contacts.

Last Answer : Answer: C