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Question
WHAT IS THE DIFFERENCE BETWEEN RATED SPEED AND ECONOMIC 
SPEED?
 Question Submitted By :: Mechanical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
THE RATED SPEED TELLS US ABOUT THE MAXIMUM SPEED WHICH CAN
BE ACHIEVED BY A VEHICLE OR SOME OTHER MACHINE BUT THE
ECONOMICAL SPEED MEANS THE SPEED LIMIT AT WHICH THE MACHINE
WORKS EFFICIENTLY WITH LEAST CONSUMPTION OF FUEL.EG-
IN NORMAL BIKES(NOT RACING),THE MAX.SPEED LIMIT SHOWN ON
SPEEDOMETER IS UPTO 120 KMPH BUT COMPANIES ALWAYS ADVICE
THEIR CUSTOMERS TO DRIVE SUCH BIKES AT AROUND 60 KMPH TO
HAVE MAXIMUM MILEAGE
 
Is This Answer Correct ?    28 Yes 0 No
Harsimranjot Singh
 
Answer
# 2
THE RATED SPEED TELLS US ABOUT THE MAXIMUM SPEED WHICH CAN
BE ACHIEVED BY A VEHICLE OR SOME OTHER MACHINE BUT THE
ECONOMICAL SPEED MEANS THE SPEED LIMIT AT WHICH THE MACHINE
WORKS EFFICIENTLY WITH LEAST CONSUMPTION OF FUEL.
EG-in normal bike speed upto120km/hr is the rated speed.
& the speed shown in green colour is the ECONOMICAL SPEED
 
Is This Answer Correct ?    8 Yes 0 No
Arshad
 
 
 
Answer
# 3
rated speed is max speed at which machine can be operated
and economic speed is that speed at which the efficiency is max.
 
Is This Answer Correct ?    5 Yes 1 No
Praveen
 

 
 
 
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What are the types of cleaning main engine Turbo Charger blower side?   1
What will happen if cold water is poured on the Barrel (Used for oil storage) filled with water vapour.   4
If I import a steam boiler from USA and want to install it in India, will it work ?   6
what r kinds of energies? or types of energies   2
what is gear ratio & how it can calculate MAHINDRA 8
what is shear stress...and give its application? TATA 4
compare diesel engine and gasoline engine emission?   2
1. Centrifugal pump is used to drain the coolant from the machine to coolant tank via magnetic separator and paper filter. But more foam is raising in the coolant tank. We need to arrest the foam formation inside tank which is nt desired. How do we correct this issue? (Hardness of the water is at recommended ppm). Nissan 2
sir plz tell me what is the basic concept of mechanical maintenance HPCL 2
Can we achieve condenser vaccume more than 1 bar?   1
The old welding machines used electromagnetic winding to step up the current for welding rods. What is the new principle inside the welding machines? Focus 2
 
For more Mechanical Engineering Interview Questions Click Here 
 
 
 
 
 


   
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