Question: In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?

• 1. rectilinear flow
• 2. radial flow
• 3. free vortex motion
• 4. forced vortex

Question: The hydraulic turbines are also known as : ___________?

• 1. steam turbines
• 2. water turbines
• 3. combustion turbines
• 4. Gas turbines

Question: Method of governing used in diesel engine is__________________?

• 1. quantity governing
• 2. quality governing
• 3. combined governing
• 4. partial governing

Question: Method of governing used in petrol engine is________________?

• 1. quantity governing
• 2. quality governing
• 3. combined governing
• 4. partial governing

Question: The termal efficiency of a petrol engine at design load is around_________________?

• 1. 90%
• 2. 50%
• 3. 40%
• 4. 30%

Question: As the number of cylinders in multi-cylinder engine increases, the power to weight ratio_______________?

• 1. Decreases
• 2. Increases
• 3. Remains same
• 4. Decreases upto a limit and then increases

Question: All the four operations in two stroke engine are performed in following number of revolutions of crank shaft______________________?

• 1. Half
• 2. One
• 3. Two
• 4. Four

Question: In the case of petrol engine at maximum output, the percentage of CO in exhaust gases is ____________________?

• 1. Zero
• 2. 5-10%
• 3. Depends on load and quality of fuel
• 4. Considerable percent

Question: In a diesel engine, injection pressure developed by injector is of the order of______________?

• 1. 10 kg/cm2
• 2. 100 kg/cm2
• 3. 500 kg/cm2
• 4. 1400 kg/cm2

Question: In precombustion chamber in diesel engine________________?

• 1. The shape and layout of the pistion crown, the inlet port, and the valve produce the turbulent effect of fuel mixture
• 2. Fuel is injected into an auxiliary chamber that is separated from the cylinder by an orifice or throat
• 3. Only a part of air charge is contained in an auxiliary chamber in which the fuel starts to burn with insufficient air which due to explosion tendency mixes thoroughly into main cylinder charge
• 4. There are no valves