Description : Nickel-cadmium batteries are superior to lead-acid batteries at high discharge rates because they _______________. A. deliver a large amount of power and can be recharged in a shorter time B. need ... less mounting space C. have higher output voltages and require no maintenance D. all of the above
Last Answer : Answer: A
Description : At high discharge rates, nickel-cadmium storage batteries are superior to lead-acid batteries because they __________. A. require fewer cells for the same voltage and less mounting space B. are able to ... times without much damage D. have no individual cells to replace at the end of useful life
Last Answer : Answer: C
Description : Nickel-cadmium storage batteries are superior to lead-acid batteries because they __________. A. put out higher voltages and require no maintenance B. can remain idle and keep a full charge for a long time C. need fewer cells in series and use less mounting space D. all of the above
Last Answer : Answer: B
Description : Which of the following statements concerning nickel-cadmium batteries is true? A. When mixing electrolyte always add acid to the water. B. Nickel-cadmium batteries can be charged and ... The electrolyte of an idle nickel-cadmium battery must be replaced monthly to maintain battery condition.
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 : Whic of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc.? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon
Last Answer : (2) Nickel and cadmium Explanation: A rechargeable battery, storage battery, or accumulator is a type of electrical battery. It comprises one or more electrochemical cells, and is a ... sizes, ranging from button cells to megawatt systems connected to stabilize an electrical distribution network.
Description : Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon
Last Answer : Nickel and cadmium
Description : Compare between lead acid and nickel-cadmium batteries?
Last Answer : Lead acid : Dilute H2SO4, spongy and PbSO2, low efficiency, 2 volt per cell, less strong, requires more maintenance, less efficient wrt temperature, discharges fast, low cost, problem of sulfation.
Description : Batteries used for diesel engine starting should __________. A. be located in a locker on the weather deck B. be located as close as possible to the engine C. have sufficient capacity to provide at least 50 starts consecutively without recharging D. only be of the nickel alkaline type
Description : The storage battery generally used in electric power station is A. Nickel-cadmium battery B. Zinc carbon battery C. Lead-acid battery D. None of the above
Last Answer : C. Lead-acid battery
Description : The storage battery generally used in electric power station is A] nickel-cadmium battery B] zinc-carbon battery C] lead-acid battery D] None of the above
Last Answer : C] lead-acid battery
Description : Electric ovens using heating elements of _______________ can produce temperature upto 3000°C. (A) Nickel (B) Graphite (C) Chromium (D) Iron
Last Answer : Ans: C Chromium has high melting point.
Description : Can I replace Nickel Cadmium batteries with NiMH?
Last Answer : Yah, that’s fine. Just don’t put your NiMH batteries in the NiCad charger.
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 : What is the approximate voltage produced by a nickel-cadmium battery cell? A. 1.25 volts B. 1.50 volts C. 2.20 volts D. 6.05 volts
Description : To determine the state of charge of a nickel-cadmium battery, you would use a/an _____________. A. voltmeter B. hydrometer C. ammeter D. potentiometer
Description : To determine the state of charge of a nickel-cadmium battery, you should ___________. A. check the electrolyte with a hydrometer B. use the constant specific gravity method C. use a nonbreakable mercury thermometer D. connect a voltmeter to the battery terminals
Description : When charging a nickel-cadmium battery, ____________. A. the charging rate should be lessened when gassing commences B. overcharging should be avoided C. the specific gravity of the electrolyte will be ... by the state of charge D. add distilled water just prior to charging to insure proper mixing
Description : To test the state of charge of a nickel-cadmium battery, you should use a/an ____________. A. ammeter B. voltmeter C. hydrometer D. potentiometer
Description : A nickel-cadmium battery is receiving a normal charge and gases freely. The charging current should _____________. A. be increased B. be decreased C. be cut off and the battery allowed to cool D. remain the same
Description : Local action in a nickel-cadmium battery is offset by _____________. A. separating the positive and negative plates with plastic spacers B. separating the positive and negative plates with resin impregnated spacers C. adding a small amount of lithium hydroxide to the electrolyte D. trickle charging
Description : What are the disadvantages of nickel cadmium battery?
Last Answer : Status of charge not known Number of cells are more Cost very high Environmental protection agency considers cadmium as a hazardous material, difficult to discard at the end of life.
Description : Maintenance of alkaline batteries should include _________. A. checking the electrolyte weekly using a hydrometer B. replacing the electrolyte every 5 years C. top off with sulfuric acid as needed D. making certain connections are tight and clean
Description : Batteries 'A' and 'B' shown in the illustration are 6 volts each and batteries 'C' and 'D' are 24 volts each. If 'A' were connected in series-opposing to 'C' and 'B' was similarly ... the top terminal C. 30 volts, negative at the bottom terminal D. 30 volts, positive at the bottom terminal
Description : Batteries 'A' and 'B' shown in the illustration are 6 volts each and batteries 'C' and 'D' are 24 volts each. If 'A' and 'B' were reconnected to be in series-opposing to 'C' and 'D' ... at the top terminal C. 30 volts, negative at the bottom terminal D. 30 volts, positive at the bottom terminal
Description : When troubleshooting an alkaline storage battery a weak or dead cell is best located by ____________. A. checking the specific gravity of each cell B. visually inspecting each cell's ... testing each cell with a voltmeter D. measuring the electrolyte temperature with an accurate mercury thermometer
Description : Which is the modified form of batteries in today’s electronic cars? A. Lithium ion B. Nickel iron C. Lead Acid D. Sodium Nitrate
Last Answer : A. Lithium ion
Description : Securities issued by companies are traded in _______________. a) derivatives market b) tertiary market c) primary market d) secondary market
Last Answer : Which of the following is not a conduct most people associate with ethical behaviour? a) Bargaining b) Respect for others c) Loyalty d) Pursuit of excellence
Description : According to Coast Guard Regulations (46 CFR), which of the following is an acceptable lining for battery trays containing alkaline batteries? A. Brass B. Lead C. Steel D. Zinc
Description : Maintenance of alkaline batteries should include _________. A. checking the electrolyte weekly using a hydrometer B. replacing the electrolyte every 5 years C. trickle charging D. replacment when the volts per cell drops below 1.8 VDC
Description : A slow continual loss of electrolyte level from one cell of a storage battery could be due to _______________. A. a cracked casing B. too low a charging rate C. the specific gravity being higher than normal D. one filler cap installed too tightly
Description : Which of the following statements describes the effects of ambient temperature on local action within lead-acid storage batteries? A. Increasing ambient temperature increases local action. B. Increasing ambient ... has no effect on local action. D. At 90°F all local action virtually ceases.
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 charging of lead-acid storage batteries will always result in __________. A. dangerous acid burns B. a dangerously explosive gas being liberated C. the danger of lead poisoning D. all of the above
Description : Organic compound (A), C4H8O, does not react with sodium or PCl5. However, it reduces an alkaline solution of a copper (II) salt on heating. Compound (A) could be (a) an aldehyde (b) a primary alcohol (c) a ketone (d) a secondary alcohol
Last Answer : an aldehyde
Description : What are the advantages of secondary cells over primary cell?
Last Answer : a. It gives high current capacity. b. Its internal resistance is very low. c. It gives a constant current. d. It posses very high efficiency. e. It posses fairly constant emf. f. It posses good ... large storage capacity. h. It can be renewed by charging after it is discharge. i. It is durable.
Description : Answer: b, c The body contains fuel reserves which it can mobilize and utilize during times of starvation or stress. By far the greatest energy component is fat, which is calorically dense since it ... liver and free glucose have a trivial caloric value of less than 1000 kcal for a 70 kg male
Last Answer : Which of the following statement(s) is/are true concerning the indications and administration of nutritional support to cancer patients? a. Preoperative nutritional support should be provided to all ... total parenteral nutrition solutions maintain integrity of the small bowel e. None of the above
Description : _______ allows servers and storage devices to increasingly share and utilize applications by easy migration from one server to another a) Grid Computing b) Artificial Intelligence c) Virtualization d) Web 3.0
Last Answer : Virtualization
Description : Pin #8 of the astern valve position sensor shown in the illustration is connected _______________. EL-0099 A. to analog common B. in series with PCOM C. to (-) 50 volts D.C. D. to (+) 50 volts D.C.
Description : Pin #6 of the ahead valve position sensor as shown in the illustration is connected _______________. EL-0099 A. to (-) 50 volts D.C. B. in parallel with PCOM C. to (+) 50 volts D.C. D. to analog common
Description : The vertical dotted line connecting the small circular symbols at coordinates '05L', '09L', '13L', '21L', '25L', etc., shown in the illustration, indicate that all _______________. EL-0100 A. contacts are ... board 'TB2' C. wires are grounded at both ends of the line D. wires have a common shield
Description : Which of the following primary cells has the highest voltage ? A. Manganese-alkaline B. Carbon-zinc C. Lithium D. Mercury
Last Answer : C. Lithium
Description : When used for taking resistance measurements, a volt-ohm-milliammeter is normally powered by _____________. A. a hand cranked generator B. internal storage batteries C. the current in the circuit being tested D. a step down transformer
Description : Under normal conditions, storage batteries used for starting the emergency diesel generator are maintained in a charged state by which of the following methods? A. Trickle charging B. Fast charging C. Equalizing charge D. Reverse charging
Description : During the charging process of storage batteries, the charging rooms should be well ventilated because __________. A. without ventilation excessive gassing will occur B. highly poisonous gases are ... gases will otherwise accumulate D. without ventilation the battery will not take a full charge
Description : Explain advantages of storage batteries
Last Answer : Few advantages of storage batteries are mentioned below: Most efficient form of storing energy portably. Stored energy is available immediately because there is no lag of time for delivering the stored energy ... source for supply of energy. The energy can be drawn at a fairly constant rate.
Description : Explain the application of storage batteries.
Last Answer : Storage batteries are used for various purposes, some of the applications are mentioned below: For the operation of protective devices and for emergency lighting at generating stations and ... For emergency lighting at hospitals, banks, rural areas where electricity supplies are not possible.
Description : The most resistant material to alkaline corrosion is (A) Duriron (B) Nickel (C) Aluminium (D) Karbate
Last Answer : (B) Nickel
Description : From the standpoint of safety, you should never allow salt water to enter a leadacid storage battery or come in contact with sulfuric acid because ______________. A. the resulting gas is ... peroxide D. combining salt water with lead-acid creates an invisible gas resulting in severe corrosion
Description : Lead Storage batteries commonly contain ____. A. Copper B. Lead C. Iron D. Mercury
Last Answer : ANSWER: B