Description : When all the lead sulfate has been converted, what is the condition of the cell?
Last Answer : Fully charged.
Description : Which of the problems listed will occur if a lead-acid battery is allowed to remain in a discharged condition for a long period of time? A. The battery may be unable to accept a full charge ... . C. The concentrated sulfuric acid will attack the lead peroxide plates. D. The separators will harden.
Last Answer : Answer: A
Description : When charging lead-acid batteries, the charging rate should be reduced as the battery nears its full charge to ____________. A. prevent damaging battery plates B. allow equalization of cell voltages C. reduce lead sulfate deposits D. increase lead peroxide formation
Description : When charging lead-acid batteries, you should reduce the charging rate as the battery nears its full charge capacity to ______________. A. prevent excessive gassing and overheating B. allow equalization of cell voltages C. reduce lead sulfate deposits D. increase lead peroxide formation
Description : What is the newly formed lead compound in a reaction between lead (IV) sulfate and tin (II) chlorate?
Last Answer : Lead sulfate is not soluble in water.
Description : Sulfuric acid is to reactant as lead sulfate is to ?
Last Answer : Lead sulfate is the product.
Description : If the illustrated device is fully discharged, what will be the result? EL-0061 A. The battery will be short circuited because the mud space will be filled with lead sulfate B. The electrolyte ... minimum sulfuric acid. D. The plates will be maximum lead oxide and sponge lead minimum lead sulfate.
Last Answer : Answer: C
Description : If the illustrated device is fully discharged, what will be the result? EL-0061 A. The plates will be maximum lead sulfate minimum sponge lead and lead oxide, the electrolyte will be ... lead oxide and sponge lead minimum lead sulfate, the electrolyte will be maximum water minimum sulfuric acid
Description : The plates of a NiCad storage battery are made of ________. A. potassium hydroxide with a small amount of sulfuric acid B. lead and lead peroxide C. silver oxide and lead sulfate D. combinations of nickel powder and nickel & cadmium salts
Last Answer : Answer: D
Description : Which of the processes listed occurs during the charging of a lead-acid storage battery? A. Negative plates change to lead peroxide. B. Positive plates change to lead peroxide. C. Both plates change to lead peroxide. D. Both plates change to lead sulfate.
Last Answer : Answer: B
Description : Which of the following activities occurs during the charging process of a lead-acid storage battery? A. The specific gravity of the acid increases. B. Both plates change chemically to lead sulfate. C. The specific gravity of the acid decreases. D. Hydrogen gas is absorbed.
Description : Caution must be exercised during the charging of lead-acid storage batteries as _____________. A. the acid will become weaker B. hydrogen gas is being continuously liberated C. both plates are changing chemically to lead sulfate D. lead peroxide in the negative plate is poisonous
Description : The illustrated lead acid battery is about to be placed in service. The negitive plate, labeled 'E', is made of_______. EL-0031 A. sponge lead (Pb) B. lead peroxide (PbO2) C. lead sulfate (PbSO4) D. zinc oxide (ZnO2)
Description : The illustrated lead acid battery is about to be placed in service. The positive plate labeled 'D' is made of_______. EL-0031 A. sponge lead (Pb) B. lead peroxide (PbO2) C. lead sulfate (PbSO4) D. a depolarizing mix
Description : The electrolyte used in a nickel-cadmium battery is distilled water and ______________. A. diluted sulfuric acid B. potassium hydroxide C. lead sulfate D. zinc oxide
Description : Which one of the following is largest? w) the number of molecules in 2 grams of hydrogen gas x) the number of molecules in 60 grams of lead sulfate y) the number of molecules in 20 liters of oxygen gas at standard temperature and pressure z) the population of the United States
Last Answer : ANSWER: A - THE NUMBER OF MOLECULES IN 2 GRAMS OF HYDROGEN GAS
Description : How much power is converted by a 1-horsepower motor in 12 hours?
Last Answer : 8,952 watt hours or 8.952 kWh.
Description : By what two means can the data contained on a source document be converted into a machinereadable form for processing?
Last Answer : By either direct or indirect means.
Description : Main source of lead is galena `(PbS)`. It is converted to Pb by `:` Self`-` reduction process is `:`
Last Answer : Main source of lead is galena `(PbS)`. It is converted to Pb by `:` Self`-` reduction process is `:` A. A B. B C. both D. none
Description : In the illustrated motor controller circuit, which statment is true? EL-0023 A. The high and low speed lights operate at less than line voltage with a resistor in series. B. This controller can be ... . The wattage of the high speed light must be greater than the wattage of the low speed light.
Description : Are there any shampoos without Sodium laureth sulfate, which has been shown to cause hair loss?
Last Answer : You can find these in health food stores like Trader Joes, or whole foods. These items tend to be more pricey, but if you are concerned about hair loss then the few dollars more is probably worth it.
Description : . What primary condition must magnetic lines of force meet in order to exist?
Last Answer : Magnetic lines of force must form a continuous closed loop.
Description : What is the condition of the diode in a series limiter when an output is developed? In a parallel limiter?
Last Answer : Conducting, cutoff.
Description : In a series-RLC circuit, what is the condition of the circuit if there is high impedance, low current, and low reactance voltages
Last Answer : Nonresonant (circuit is either above or below resonance)
Description : What causes the specified condition to shift position?
Last Answer : The input, or clock pulse.
Description : What condition must occur to have a change in the output of a D FF?
Last Answer : A positive-going clock pulse.
Description : A tape pack has gaps in the tape winding as shown in figure 2-5. What causes this condition?
Last Answer : Tape is loosely wound on reel.
Description : A tape pack is buckled and deformed as shown in figure 2- 4. What are three possible causes for this condition?
Last Answer : a. Reel has a distorted hub, b. tape wound over small particle deposited on hub, and c. tape wound on reel with tension increasing toward end of winding.
Description : . After rewinding a tape onto its supply reel, you examine the tape pack and notice pile-ups of tape resembling the example in figure 2-2. What causes this condition?
Last Answer : The tape is stopped too quickly when winding or rewinding.
Description : For a circuit to be considered to be in the quiescent condition, what
Last Answer : The input signal
Description : What two properties of the launch condition may affect multimode fiber attenuation measurements?
Last Answer : . Launch spot size and angular distribution.
Description : Modes of a light pulse that enter the fiber at one time exit the fiber at different times. This condition causes the light pulse to spread. What is this condition called?
Last Answer : Modal dispersion.
Description : What condition causes a light ray to be totally reflected back into its medium of propagation?
Last Answer : Total internal reflection occurs when the angle of refraction approaches 90 degrees. This condition occurs when the angle of incidence increases to the point where no refraction is possible.
Description : What condition gives maximum power transfer from the source to the load?
Last Answer : When the load resistance equals the source resistance.
Description : What condition must exist on both the limiter and quadrature grids for current to flow in a gated-beam detector?
Last Answer : Both grids must be positively biased
Description : What is the most accurate method of determining the condition of an electron tube?
Last Answer : Testing the tube in its circuit
Description : Prior to substituting a diode, what measurements should you take to determine its condition?
Last Answer : Voltages and resistances.
Description : What condition produces the 10-kHz error signal generated by the metering bridge in the HP- 431C power meter?
Last Answer : An unbalance in the metering bridge.
Description : How is an overload condition indicated by the electronic digital multimeter?
Last Answer : Simultaneous flashing of display readouts
Description : Before you connect a VOM in a circuit for an ohmmeter reading, in what condition must the circuit be?
Last Answer : De-energized
Description : What is an excessive heat condition?
Last Answer : A condition in which the heat in or around the circuit increases to a higher than normal level
Description : What is an excessive current condition?
Last Answer : A condition that is not a direct short but in which circuit current increases beyond the designed current carrying ability of the circuit.
Description : What condition exists when the insertion of a meter into a circuit changes the operation of the circuit?
Last Answer : Meter-loading.
Description : What is the tin-lead alloy percentage of solder used for electrical connectors, splices, and terminal lugs?
Last Answer : 60-percent tin and 40-percent lead (60/40 solder).
Description : How is the collector lead identified on an oval-shaped transistor?
Last Answer : By the wide space between the collector lead and the other two leads (emitter and base)
Description : When taking a voltage measurement, which lead of the voltmeter should you connect to the circuit first?
Last Answer : Ground.
Description : When a lead is soldered to a pad without passing through the board, it is known as what type of termination?
Last Answer : On-the-board termination.
Description : What undesirable effect is caused by the inductance of the cathode lead?
Last Answer : Degenerative feedback.
Description : What are the three types of lead-sheathed cables?
Last Answer : Alloy lead, pure lead, and reinforced lead.
Description : Can I just pour the copper sulfate in the toilet?
Last Answer : link page 1 lower left