Submarines move under water. They have engines that run on (1) Petrol and oxygen (2) Diesel (3) Batteries (4) Steam

Submarines move under water. They have engines that run on (1) Petrol and oxygen (2) Diesel (3) Batteries (4) Steam
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Diesel
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The fuel that is used in modern submarines is – (1) Nuclear fuel (2) Petrol (3) Coal (4) Diesel

Description : The fuel that is used in modern submarines is – (1) Nuclear fuel (2) Petrol (3) Coal (4) Diesel

Last Answer : (1) Nuclear fuel Explanation: Nuclear power is now used in all large submarines, but due to the high cost and large size of nuclear reactors, smaller submarines still use diesel-electric propulsion. ... needs. The US Navy, drench Navy, and the British Royal Navy operate only nuclear submarines.

The fuel that is used in modern submarines is (1) Nuclear fuel (2) Petrol (3) Coal (4) Diesel

Description : The fuel that is used in modern submarines is (1) Nuclear fuel (2) Petrol (3) Coal (4) Diesel

Last Answer : Nuclear fuel

Supercharging is essential in A. aircraft engines B. petrol engines C. gas turbines D. diesel engines

Description : Supercharging is essential in A. aircraft engines B. petrol engines C. gas turbines D. diesel engines

Last Answer : ANSWER : A

Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines? (A) Air filter (B) Fuel injector (C) Exhaust silencer (D) Battery

Description : Which of the following is normally not found in both the S.I. (petrol) & C.I. (diesel) engines? (A) Air filter (B) Fuel injector (C) Exhaust silencer (D) Battery

Last Answer : Option B

Which Has More Efficiency: Diesel Engine Or Petrol Engines?

Description : Which Has More Efficiency: Diesel Engine Or Petrol Engines?

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Which of the following is not an internal combustion engine? a. petrol engine b. steam turbine c. diesel engine d. gas turbine

Description : Which of the following is not an internal combustion engine? a. petrol engine b. steam turbine c. diesel engine d. gas turbine

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A spark plug is used in a. petrol engine b. diesel engine c. gas engine d. steam engine

Description : A spark plug is used in a. petrol engine b. diesel engine c. gas engine d. steam engine

Last Answer : ANSWER a. petrol engine

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Description : Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by ... in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

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If diesel is used in a petrol engine a. engine will not run b. engine detonates c. engine gives smoke d. engine knocks

Description : If diesel is used in a petrol engine a. engine will not run b. engine detonates c. engine gives smoke d. engine knocks

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Scavenging air in diesel engine means a. air used for combustion under pressure b. forced air for cooling the cylinder c. burnt air containing products of combustion d. air used for forcing burnt gases out of the engines cylinder during the exhaust stroke

Description : Scavenging air in diesel engine means a. air used for combustion under pressure b. forced air for cooling the cylinder c. burnt air containing products of combustion d. air used for forcing burnt gases out of the engines cylinder during the exhaust stroke

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To find the hidden secrets under the water, the ships and submarines use _____. A. Radiation system B. Sonar system C. X-ray system D. Radiation system

Description : To find the hidden secrets under the water, the ships and submarines use _____. A. Radiation system B. Sonar system C. X-ray system D. Radiation system

Last Answer : ANSWER: B

To find the hidden secrets under the water, the ships and submarines use _____. A. Radiation system B. Sonar system C. X-ray system D. Radiation system

Description : To find the hidden secrets under the water, the ships and submarines use _____. A. Radiation system B. Sonar system C. X-ray system D. Radiation system

Last Answer : ANSWER: B

Steps taken by the Government of India to control air pollution include (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons (b) permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles (c) use of non-polluting compressed natural gas (CNG) only as fuel by all buses and trucks (d) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.

Description : Steps taken by the Government of India to control air pollution include (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and ... trucks (d) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.

Last Answer : (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons

Can unleaded petrol be used in engines that were designed for leaded petrol?

Description : Can unleaded petrol be used in engines that were designed for leaded petrol?

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Octane number of petrol normally used in petrol engines is of the order of a. 20-30 b. 40-60 c. 60-70 d. 80-90

Description : Octane number of petrol normally used in petrol engines is of the order of a. 20-30 b. 40-60 c. 60-70 d. 80-90

Last Answer : ANSWER d. 80-90

The air fuel ratio in petrol engines is controlled by a. valve opening / closing b. governing c. carburetion d. scavenging

Description : The air fuel ratio in petrol engines is controlled by a. valve opening / closing b. governing c. carburetion d. scavenging

Last Answer : ANSWER c. carburetion

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Description : Antioxidants are added in petrol to (A) Impart colour to it, for easy identification (B) Minimise the gum formation (C) Prevent icing of the carburettor (D) Prevent the lead build up in engines

Last Answer : (B) Minimise the gum formation

__________ prohibits the use of alcohols directly in petrol engines. (A) Low octane number (B) High cost & availability (C) Low flash point (D) Low calorific value

Description : __________ prohibits the use of alcohols directly in petrol engines. (A) Low octane number (B) High cost & availability (C) Low flash point (D) Low calorific value

Last Answer : (B) High cost & availability

The compression ratio for petrol engines is  A.3 to 6  B.5 to 8  C.15 to 20  D.20 to 30

Description : The compression ratio for petrol engines is  A.3 to 6  B.5 to 8  C.15 to 20  D.20 to 30

Last Answer : Answer: B

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

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Are diesel engines more efficient? If so why?

Description : Are diesel engines more efficient? If so why?

Last Answer : answer:From Wikipedia : Diesel engines often achieve greater fuel efficiency than petrol (gasoline) engines. Diesel engines have energy efficiency of 45% and petrol engines of 30%.[3] That is one of ... high as 25:1. The higher compression ratio of the diesel engine leads to better efficiency.

Are diesel engines better than gas engines?

Description : Are diesel engines better than gas engines?

Last Answer : Are diesel engines better than gas engines is sort of a yes and no question. Diesel engines generally get better fuel mileage and last longer overall. But, gas engines are easier to maintain on your own and gasoline is much more readily available than diesel fuel is on the whole.

Are Mazda cars available in diesel or gas engines?

Description : Are Mazda cars available in diesel or gas engines?

Last Answer : Mazda cars require gas for their engines, not diesel. They also have hybrid vehicles, which run on both electricity and gas, but not diesel.

Why do diesel fuel truck engines seem to last longer?

Description : Why do diesel fuel truck engines seem to last longer?

Last Answer : The primary reason these engines last longer is the nature of diesel fuel as a lubricant. In addition, these engines typically operate at lower revolutions per minute, further extending their life.

With EFI of diesel engines a) sharp start and stop is not possible b) very high injection pressure can be obtained c) sudden cylinder cut-off is impossible d) diagnostic properties are poor

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Description : The probability of knocking in diesel engines is increased by a. High self-ignition temperature. b. Low volatility. c. High viscosity. d. all of the above

Last Answer : ANSWER d. all of the above

For the best results of efficient combustion, high speed diesel engines need an approximate cetane number of a. 100 b. 50 c. 10 d. 5

Description : For the best results of efficient combustion, high speed diesel engines need an approximate cetane number of a. 100 b. 50 c. 10 d. 5

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The probability of knocking in diesel engines is increased by a. High self-ignition temperature. b. Low volatility. c. High viscosity. d. All of the above

Description : The probability of knocking in diesel engines is increased by a. High self-ignition temperature. b. Low volatility. c. High viscosity. d. All of the above

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Description : Most high-speed compression engines operate on a. diesel cycle b. Otto cycle c. dual cycle d. Carnot cycle

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For the same capacity engines, the compression ratio of diesel engine a. is lower than the compression ratio of SI engine b. is higher than the compression ratio of SI engine c. is same as the compression ratio of SI engine d. cannot say

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Description : What type of electric motor is commonly used to start small auxiliary diesel engines? A. synchronous B. series C. shunt D. cage

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Diesel engines are best suited for heavy vehicles, such as lorries, trucks, railway engines and ships. Why?

Description : Diesel engines are best suited for heavy vehicles, such as lorries, trucks, railway engines and ships. Why?

Last Answer : As they have more power and efficiency of diesel engine is more.

The piston pin bearings in heavy-duty diesel engines are (a) needle roller bearings (b) tapered roller bearings (c) spherical roller bearings (d) cylindrical roller bearings

Description : The piston pin bearings in heavy-duty diesel engines are (a) needle roller bearings (b) tapered roller bearings (c) spherical roller bearings (d) cylindrical roller bearings

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Cocentric springs are used in (A) Heavy duty diesel engines (B) aircraft engines (C) railroad suspensions (D) all of the above

Description : Cocentric springs are used in (A) Heavy duty diesel engines (B) aircraft engines (C) railroad suspensions (D) all of the above

Last Answer : (D) all of the above

The production of irrigation pumps and diesel engines started during……. a)1950s b)1930s c)1940s d)2000s

Description : The production of irrigation pumps and diesel engines started during……. a)1950s b)1930s c)1940s d)2000s

Last Answer : 1930S

Which of the following engines was introduced by a German engineer, Nickolas Otto?  a. Gasoline engine  b. Diesel engine  c. Gas turbine  d. Thermal engine

Description : Which of the following engines was introduced by a German engineer, Nickolas Otto?  a. Gasoline engine  b. Diesel engine  c. Gas turbine  d. Thermal engine

Last Answer : Gasoline engine

Which of the following engines is the most efficient?  a. Gas turbine  b. Diesel engine  c. Carnot engine  d. Gasoline engine

Description : Which of the following engines is the most efficient?  a. Gas turbine  b. Diesel engine  c. Carnot engine  d. Gasoline engine

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Which of the following best describes both Stirling and Ericson engines?  a. Internal combustion engine  b. External combustion engine  c. Diesel cycle  d. Rankine cycle

Description : Which of the following best describes both Stirling and Ericson engines?  a. Internal combustion engine  b. External combustion engine  c. Diesel cycle  d. Rankine cycle

Last Answer : External combustion engine

Gasoline and Diesel Engines are best described by the _________.  a. Otto Cycle  b. Burnign Cycle  c. Shikki Cycle  d. Shapa R’ Elli Cycle

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Last Answer : Otto Cycle

The compression ratio for Diesel engines is  A. 3 to 6  B. 5 to 8  C. 15 to 20  D. 20 to 30

Description : The compression ratio for Diesel engines is  A. 3 to 6  B. 5 to 8  C. 15 to 20  D. 20 to 30

Last Answer : Answer: C

Describe air fuel- ratio requirements for diesel engines at no load to full load.

Description : Describe air fuel- ratio requirements for diesel engines at no load to full load.

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List changes made by automobile manufactures in achieving BS VI norms in diesel engines.

Description : List changes made by automobile manufactures in achieving BS VI norms in diesel engines. 

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State the different types of engines in diesel power plant.

Description : State the different types of engines in diesel power plant.

Last Answer : Types of engines in diesel power plant: 1) Two Stroke Diesel Engine 2) Four Stroke Diesel Engine

Overload capacity of diesel engines is usually restricted to?

Last Answer : Overload capacity of diesel engines is usually restricted to 2 percent.

72. Measuring Biochemical Oxygen Demand (BOD) is a method used for (1) Working out the efficiency of R.B.Cs. about their capacity to carry oxygen (2) Estimating the amount of organic matter is sewage water (3) Working out the efficiency of oil driven automobile engines (4) Measuring the activity of Sacccharomyces cerevisae in producing curd on a commercial scale

Description : 72. Measuring Biochemical Oxygen Demand (BOD) is a method used for (1) Working out the efficiency of R.B.Cs. about their capacity to carry oxygen (2) Estimating the amount of ... driven automobile engines (4) Measuring the activity of Sacccharomyces cerevisae in producing curd on a commercial scale

Last Answer : Estimating the amount of organic matter is sewage water

Why do they refer to submarines as female?

Description : Why do they refer to submarines as female?

Last Answer : answer:Why are cars and guitars female? I only refer to objects as feminine / masculine when speaking French.

Pour point and freezing point is equal for (A) Petrol (B) Diesel (C) Water (D) Crude petroleum

Description : Pour point and freezing point is equal for (A) Petrol (B) Diesel (C) Water (D) Crude petroleum

Last Answer : (C) Water

Do steam engines have drivers?

Description : Do steam engines have drivers?

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Did Egyptians invent steam engines?

Description : Did Egyptians invent steam engines?

Last Answer : What is the answer ?