Description : A stable interface between solid _________ liquid ____________ and gaseous ___________ promotes high rate of electrode processes. a) Fuel, electrolyte, electrode b) Electrode, fuel, electrolyte c) Electrode, electrolyte, fuel d) Fuel, electrode, electrolyte
Last Answer : c) Electrode, electrolyte, fuel
Description : Inverter cell anode and cathode of the…………. cell is used for vehicle (a) Copper electrode zinc (b)Zinc copper (c) Aluminium zinc (d)Nickel Cobalt
Last Answer : (a) Copper electrode zinc
Description : Solids which conduct electricity at higher temperature but not at lower temperature are called (1) super-conductor (2) metallic-conductor (3) semi-conductor (4) insulator
Last Answer : (3) semi-conductor Explanation: Semiconductors are insulators at low temperatures and reasonably good conductors at higher temperatures. As temperature increases, the semiconductor material becomes a better and better conductor.
Last Answer : semi-conductor
Description : How to increase the range on electric vehicles? a. By increasing the battery capacity. b. By reducing battery capacity. c. By installing a turbocharger. d. By installing another DC motor.
Last Answer : a. By increasing the battery capacity.
Description : How long does an electric car battery lasts per charge? A. 20 min.-10hr. B. 30min.-12hr. C. 40min.-9hr. D. 60min.-8hr.
Last Answer : B. 30min.-12hr.
Description : A dead storage battery can be revived by A. Adding distilled water B. Adding so-called battery restorer C. A dose of H2SO4 D. None of the above
Last Answer : D. None of the above
Description : Which of the following battery is used for aircraft? A. Lead acid battery B. Nickel-iron battery C. Dry cell battery D. Silver oxide battery
Last Answer : B. Nickel-iron battery
Description : Ampere hour capacity of an industrial battery is based on ……….hours discharge rate A. 8 B. 12 C. 16 D. 24
Last Answer : A. 8
Description : To prevent local action in battery, only …………is used in electrolytes A. Pump water B. Distilled water C. Tap water D. Both A and C
Last Answer : B. Distilled water
Description : Following will happen if battery charging rate is too high A. Excessive gassing will occur B. Temperature rise will occur C. Bulging and buckling of plates we occur D. All of the above
Last Answer : D. All of the above
Description : Battery container should be acid resistance therefore it is made up of A. Glass B. Plastic C. Wood D. All of the above
Description : On over charging a battery A. It will bring about chemical change in active materials B. It will increase the capacity of the battery C. It will raise the specific gravity of the electrolyte D. None of the above
Description : Trickle charger of a storage battery helps to A. Maintain proper electrolyte level B. Increase its reverse capacity C. Prevent sulphation D. Keep it fresh and fully charged
Last Answer : D. Keep it fresh and fully charged
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 capacity of a battery is expressed in terms of A. Current rating B. Voltage rating C. Ampere hour rating D. None of the above
Last Answer : C. Ampere hour rating
Description : The charging time depends on which of the following factor? • Battery size • Battery capacity Size of vehicle • Voltage of batery
Last Answer : • Battery capacity
Description : The sulphur in sulphur sodium battery is absorbed by___ sponge. • Sodium • Carbon • Wire • Cellulose
Last Answer : • Carbon
Description : The following is the operating temperatures of the sodium –sulphur battery. • 400 to 600°C • 1000 to 1500°C • 300 to 350°C • 100 to 200°C
Last Answer : • 300 to 350°C
Description : Sodium sulphur battery is a type of molten-salt battery constructed from _____ sodium and sulphur. • Solid • Liquid • Plasma • Gases
Last Answer : • Liquid
Description : How much time it takes for a electric car of 60kWh battery to charge 1. 5 hours 2. 8 hours 3. 6-7 hours 4. None of above
Last Answer : 2. 8 hours
Description : Life of a battery in the electric vehicle is about A 8 years B 5 years C 10 years D 20 years
Last Answer : A 8 years
Description : The capacity of a battery is expressed in terms of A ampere per hour B current C volt D ampere
Last Answer : A ampere per hour
Description : What type of battery is used in an electric car? A] Lithium ion B] Nickel -metal hydride C] Both A and B D] None of the above
Last Answer : C] Both A and B
Description : What is the life of battery in an electric car ? A] 8 year B] 10 year C] 4 year D] 20 year
Last Answer : A] 8 year
Description : The output voltage of a charger is A] less than the battery voltage B] Higher than the battery voltage C] The same as the battery voltage D] None of the above
Last Answer : B] Higher than the battery voltage
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 : Silicon is a _____. A. Superconductor B. Conductor C. Semi-conductor D. Insulator
Last Answer : ANSWER: C
Description : At low temperature, Lead behaves as a (1) Semi conductor (2) Super conductor (3) Insulator (4) Conductor
Last Answer : (2) Super conductor Explanation: Lead exhibit superconducting phase transitions at low temperatures of 7.2 Kelvin. This discovery was made in 1913. At this temperature (known as critical temperature), ... to a different phase of matter; this superconducting phase is described by the BCS theory.
Last Answer : (2) Super conductor Explanation: Lead exhibit super conducting phase transitions at low temperatures of 7.2 Kelvin. This discovery was made in 1913.
Description : What is the order of energy gap in a conductor, semi conductor, and insulator?.
Last Answer : Conductor - no energy gap Semi Conductor - It is of the order of 1 ev. Insulator - 6 ev (or) more than 6 ev.
Description : Materials having resistivity ranging from 1 to 100 ohm. cm is termed as (A) Conductor (B) Insulator (C) Semi-conductor (D) None of these
Last Answer : (C) Semi-conductor
Description : Due to self-inductance, the coil wires are known as: a. Insulator b. Conductor c. Inductor d. Semi-conductor
Last Answer : c. Inductor
Description : At low temperature, Lead behaves as a : (1) Semi conductor (2) Super conductor (3) Insulator (4) Conductor
Last Answer : Super conductor
Description : The residual product discharged by the hydrogen-oxygen cell is ____________ a) Hydrogen peroxide b) Alcohol c) Water d) Potassium permanganate
Last Answer : c) Water
Description : The electrolytic solution used in a hydrogen-oxygen fuel cell is ____________ a) 75% KOH solution b) 25% KOH solution c) 75% NaOH solution d) 25% NaOH solution
Last Answer : b) 25% KOH solution
Description : Which of the following is not an example of a fuel cell? a) Hydrogen-oxygen cell b) Methyl-oxygen-alcohol cell c) Propane-oxygen cell d) Hexanone-oxygen cell
Last Answer : d) Hexanone-oxygen cell
Description : The positive plants of nickel iron cell is made up of a. Nickel hydroxide b. Lead peroxide c. Ferrous hydroxide d. Potassium hydroxide
Last Answer : a. Nickel hydroxide
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 : Which electric vehicle has 30 kwh and 160 km range? A. Nissan leaf B. Ford focus C. Mitsubishi MiE5 D. Smart ED
Last Answer : A. Nissan leaf
Description : What is the life span of electric car batteries? A. 8 Year B. 10 years. C. 9 years D. 11 years.
Last Answer : A. 8 Year
Description : Which of the following vehicles produces zero emissions? A. Traditional B. Hybrid C. Electric D. Both A and B
Last Answer : C. Electric
Description : Which vehicle has the smallest number of principle components? A. Traditional vehicle B. Hybrid vehicle C. Electric vehicle D. Both A and B
Last Answer : C. Electric vehicle
Description : Identify incorrect statement of Electric vehicle A. Insufficient charging stations B. Long charging period C. Limited range D. High operating cost
Last Answer : D. High operating cost
Description : Which of these is a problem electric car makers are trying to solve? A. Electric cars aren't noisy enough. B. They don't produce enough sulphur dioxides. C. They don't cost enough.
Last Answer : A. Electric cars aren't noisy enough.
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 : A fuel cells converts ………energy into electrical energy A. Mechanical B. Magnetic C. Solar D. Chemical
Last Answer : D. Chemical
Description : What is one of the primary downsides of fuel cells? A. Weight B. Cost C. Pollution D. Maintenance
Last Answer : B. Cost
Description : Each cell has a vent cap A. To allow gases out when the cell is on charge B. To add water to the cell if needed C. To check the level of electrolyte D. To do all above functions
Last Answer : D. To do all above functions