LMS Substation 1st Year, Level II Practice Test

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• How can the polarity of the current be determined when using an analog meter to measure DC current?
• In electrical terms, what does the term 'analog' refer to concerning meters?
• How can 200,000 ohms also be expressed?
• When resistance is decreased in a circuit, what is the expected effect on current flow?
• Which two particles make up the nucleus of an atom?
• True or False: An ammeter must be placed in parallel with the component to measure current accurately.
• What could be a potential issue if the ammeter is connected backward?
• The charge of the nucleus of any atom is always what type of charge?
• In the context of electrical circuits, what does Ohm's Law fundamentally relate?
• What is the role of an ammeter in a circuit?
• Are like charges attracted to each other?
• Which of the following accurately describes the nature of electricity?
• True or False: Ampacity is an invisible force that can produce heat, motion, and light.
• Valence electrons are located in which orbit or shell of atoms?
• If the selector is in the 600 DCV position, what is the correct voltage?
• What is a circuit called when current takes an alternate path back to the source?
• What unit represents the SI measure of resistance?
• What is the total charge of one coulomb equal to in terms of electrons?
• When voltage and current are known, which formula is used to determine resistance?
• What is defined as a completed path for voltage to flow from a source through a load and back to the source?
• What does the Greek letter omega represent in circuits?
• If the power is 72 watts and the current is 3 amps, what is the voltage of the circuit?
• What is measured by the number of coulombs per second that move past a fixed point in a circuit?
• What is the correct voltage if the selector is in the 20 DCV position?
• What is the usual number of valence electrons in an insulator?
• What commonly occurs when a circuit is shorted?
• How many times greater is the mass of a proton compared to an electron?
• The term 'ampacity' refers to what aspect of electricity?
• What is the conventional current flow direction?
• What does the symbol E represent in Ohm's Law?
• An electrical potential of one volt will cause how much work to be done by one coulomb of current?
• Using Ohm’s law, if a circuit has a current of 4 A and a resistance of 55 ohms, what is the voltage?
• How can 0.000001 Amp be expressed?
• How do you calculate the voltage of a circuit given the power and current values?
• What is the correct current value if the selector is in the 2 A position and shows 0.1 A?
• What is the term used when current does not flow in a circuit?
• What happens to the current flow when resistance in a circuit is increased?
• True or False: Power should be removed from the circuit before measuring resistance.
• What power consumption would a device have that operates at 240 volts and draws 10 amps?
• According to Ohm's Law, how many amps are needed to push one ohm of resistance through one volt?
• What is the correct voltage reading if the selector is in the 150 DCV position?
• What do many non-electrical individuals often incorrectly refer to an open circuit as?
• If a resistor draws 12 amps with a resistance of 10 ohms, how much power is consumed?
• According to Benjamin Franklin, what happens to like and unlike charges?
• Which of the following statements is true about measuring resistance?
• True or False: The metric prefix for 1,000,000 is Mega or M.
• What is the unit of measurement for electrical power?
• Why is it important to confirm the correct connection of the ammeter?
• Are unlike charges repelled by each other?
• In our numbering system, what determines the value of a digit?
• Which of the following describes the correct way to read resistance using an analog meter?
• Which statement correctly matches the relationship between voltage, resistance, and current for a given circuit?
• Electrons revolve around the nucleus in paths known as what?
• What do we call the resistance measured when no current flows?
• What does the equation P = E X I represent?
• What might happen if you attempt to measure resistance while the circuit is powered?
• What is the correct current value when the selector is in the 20 mA position?
• What does it imply when an analog meter displays a reading outside its expected range?
• How many valence electrons are typically found in a conductor?
• What term is typically used to describe a complete circuit or path?
• In Ohm's law, what does the symbol I represent?
• Which type of material generally operates effectively due to having exactly 4 valence electrons?
• What does the word "elektron," which is related to electricity, mean?
• In Ohm's Law, resistance is represented by which letter?
• What is the primary characteristic of a negative number?
• A device used to measure current flow in a circuit is known as what?
• What is the correct resistance when the meter switch is in the "X1" position?
• What happens when electrons are energized in a circuit?
• When the resistance in a circuit increases, what effect does this have on the current?
• What is the metric prefix for micro?
• What is the resistance of a lamp that operates at 120 volts and requires 0.83 amps of current?
• In relation to power calculations, what does the variable 'E' represent?
• Semiconductors can shift between which two roles based on the number of valence electrons?
• If an electric heater has a resistance of 17.32 ohms and requires a current of 6.93 amperes, what is the circuit voltage?
• True or False: The statement about charge interactions by Benjamin Franklin is accurate.
• What is the power consumed in a 120-volt circuit with a resistance of 4.5 ohms?
• Which of the following statements about current flow is true?
• What can be inferred about materials with 1 or 2 valence electrons?
• What is another term often used interchangeably with "potential difference"?
• If a circuit has a resistance of 10 ohms and it carries a current of 5 amps, what voltage does it operate at?
• Which of the following is NOT one of the three main parts of an atom?
• When adjusting an analog meter for resistance measurement, what does a "0 Ω" reading indicate?
• Which of the following best describes conductors?
• What typically signifies a failure in circuit integrity?
• Within a number, the position of a digit affects its what?
• Power is what is consumed when a voltage is applied to a circuit and current flows through it. What is one of the key components contributing to power?
• Current flow in an electrical circuit is caused by voltage and opposed by what?
• What resistance value is indicated when the meter switch is in the "X100" position?
• What is the horsepower equivalent of 1000 watts?
• If a heater operates at 240 volts and has a resistance of 28 ohms, what is the current flowing through the circuit?
• What do semiconductors typically act as in terms of electrical conductivity?
• Which of the following statements is true about conductors?
• Which statement is true regarding centrifugal force and electrons?
• What type of number is used to represent a quantity less than zero?
• When continuously changing current levels are present, which type of meter should be used?
• Before measuring current in a circuit, what should the meter be set to?
• Which of the following is the horsepower equivalent of 746 watts?
• If the selector is in the 25 DCmA position, what is the correct current value?
• What formula can be used to calculate the resistance of a load using power and current values?
• What is the resistance of a 1,000-watt lamp operating at 120 volts with a current draw of 8.333 amps, rounded to two decimal places?
• How many electrons do semiconductors typically have in their valence shell?
• Which statement is true about the condition of current flow in a closed circuit?
• What potential outcome might occur if incorrect ammeter connection persists?
• Select the correct resistance measurement when the meter switch is in the "20M" position.
• What is the horsepower equivalent of 2238 watts?
• What is the correct voltage reading if the selector is in the 200 mVDC position?
• Which instrument is used to measure resistance?
• What should be covered in a pie diagram to determine one of the three factors in Ohm's Law?
• What type of material typically has a high number of valence electrons, making it a poor conductor of electricity?
• If voltage and resistance are known, what formula is used to find current?
• What happens when a circuit is open?
• A 2,000-watt heater draws 8 amps. What is its rated voltage?
• In a circuit, if the resistance is halved while the voltage remains constant, what happens to the current?
• Which of the following materials is known for having 7 or 8 valence electrons?
• In Ohm's Law, the relationship between voltage (E), current (I), and resistance (R) can be summarized as what?
• What is the relationship between power, voltage, and current in a load?
• What is the correct resistance measurement when the meter switch is set to the "2K" position?
• What resistance is indicated when a circuit with a current of 12 amps operates with a power consumption of 1440 watts?
• What quantity do you need to measure along with voltage to check the correctness of resistance values?
• If 500 watts is consumed, what is its horsepower equivalent?
• What is the purpose of voltage in an electrical circuit?
• What is a key property of an element?
• What is the formula used to determine voltage when current and resistance are known?
• Which of the following best describes a short circuit?
• According to the correct method for measuring resistance, what is wrong when the meter is connected across Resistor 1?
• A measure of current flow defined as one coulomb per second is called what?
• What is one ohm defined as?
• What system is formed by whole numbers and operations such as addition, subtraction, multiplication, and division?
• When performing resistance measurements with an analog meter, what should be done to adjust the indicator correctly?
• What is the power consumed by a device that operates on 12 volts and draws 7 amps?
• What is true about materials with a partially filled valence ring?
• If the selector is in the 2 mA position and the result is .25 mA, what does this signify?
• What is the correct current value if the selector is in the 0.5 DCmA position?
• A 1,000-watt lamp operates on 120 volts. How much current does it draw, rounded to three decimal places?
• What does a short circuit cause a drastic decrease in?
• What is the result of adding 86 and 21?
• What force tries to cause electrons to fly off into space?
• In a circuit with 220 volts and 55 ohms of resistance, how much total resistance is needed to limit the current to 2 amperes?
• How is one watt defined in relation to joules?
• Using Ohm’s Law, if you know the voltage and current, what formula do you use to find the power consumed?
• According to the formula for power, which variable is not directly accounted for when determining power?
• What kind of current flow does a typical circuit illustrate?
• How many watts of electrical power does a 5-horsepower motor use?
• What could happen to the current in a circuit if the voltage is lowered?
• What is typically indicated by the deflection of the needle in an analog meter?
• What term is used to describe the element in a circuit that consumes power to change electrical energy into another form?
• In circuit analysis, what does a closed circuit enable?
• Which component is primarily responsible for limiting current flow in a circuit?
• What is indicated by the movement of 1 coulomb of charge in a circuit?
• How much weight is associated with one joule of energy when lifted a distance of one foot?
• What is the relationship between voltage, current, and resistance known as?
• How many electrons equate to one coulomb of charge?
• A lamp operates on 300 volts and draws 25 milliamps. What is the resistance of this lamp?
• What mathematical equation is used to find the current in a circuit when power and resistance are known?
• What symbol represents current flow in Ohm's Law?
• How many watts are equivalent to one horsepower?
• What value does the selector indicate if it is in the 0.5 DCmA position and shows 0.5 mA?
• What instrument is used to measure potential difference in a circuit?
• What will the absolute value of any number always be?
• What is the voltage reading when the selector is in the 30 DCV position?
• A temperature of -15 °F indicates a temperature that is how many degrees below zero?
• What identifies the quantity of protons in an element?
• What happens to the current flowing through a resistance if the source voltage is increased?
• What are prefix multipliers used for in electrical measurement?
• What are the smaller sub-particles of the proton and neutron called?
• When voltage increases while resistance remains constant, what happens to current?
• What do we call a substance made from two or more elements chemically bonded together?
• Which particle has a negative charge and orbits around the nucleus of an atom?
• What term describes the amount of work being done in a unit of time in a circuit?
• Insulators are characterized by having which of the following number of valence electrons?
• What is the equivalent voltage of 120 kV?
• Which type of material would have a valence electron shell with 4 electrons?
• What is the simplest form of any matter called?
• Which of the following is a common form of matter?
• What is the primary function of a circuit in electrical engineering?
• Before current can flow in a circuit, what must be true?
• How many valence electrons does a copper atom have?
• What type of matter is defined as having a definite shape and volume?
• Insulators typically prevent the flow of electricity due to their high number of what?
• Which statement is correct regarding the valence electrons in conductors?
• Which formula is most likely to be frequently used by an Electrical Worker?
• What is the correct resistance measurement when the meter switch is configured to the "200" position?
• What must happen to electrons for them to create electricity?
• If the voltage across a resistor is increased while keeping the resistance constant, what happens to the power consumption?
• If a device operates on 12 volts and draws 7 amps, what is the resistance of the circuit rounded to two decimal places?
• In the formula R = P/I^2, what does R represent?
• What is the smallest particle that retains the characteristics of an element?
• How many horsepower is equivalent to one watt?
• True or False: An analog meter can measure resistance without shorting the leads first.
• What is the voltage reading when the selector is in the 1,000 DCV position?
• How much current will flow through a 2.4 kilohm resistor when 7.2 kilovolts is applied?
• Which of the following is a characteristic of matter?
• What is the circuit voltage of an electric heater with a resistance of 15.31 ohms and drawing 7.84 amperes of current?