Speed of a submarine in deep sea & that of an aeroplane is measured by a/an___________________?

Related Mcqs:

1. In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.) ?

   A. t = 15 – 0.0065 h
   B. t = 15 + 0.0065 h
   C. t = 0.0035 h – 15
   D. t = 15 – 0.0035 h

2. Often earing defects are found during deep drawing operation, because the __________________?

   A. Surface finish of the sheet is poor
   B. Sheet material has been given substantial spring back
   C. Starting sheet has planer anisotropy due to its texture
   D. Starting sheet has normal anisotropy due to its texture

3. Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of ______________ will facilitate the most accurate measurement of the temperature ?

   A. Copper
   B. Steel
   C. Aluminium
   D. Brass

4. Angular displacement can be measured suitably by a______________________?

   A. Shaft encoder
   B. Linear variable differential transducer (LVDT)
   C. Stroboscope
   D. Tachometer

5. Fatigue resistance of a material is measured by the _____________________?

   A. Elastic limit
   B. Ultimate tensile strength
   C. Young’s modulus
   D. Endurance limit

6. As per international norms, the maximum permissible value of noise level in the industrial environment is _____________ decibels as measured at a distance of 1.5 meters from the source of noise?

   A. 110
   B. 85
   C. 60
   D. 45

7. In case of a, centrifugal pump, the ratio h1/h2 is termed as the _____________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller)?

   A. Mechanical
   B. Overall
   C. Volumetric
   D. Impeller

8. Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be_______________?

   A. More
   B. Less
   C. Same
   D. Either more or less; depends on the climatic conditions

9. Common salt is produced from sea water in India generally by the ________________ method?

   A. Freeze drying
   B. Solar evaporation
   C. Electrolytic
   D. None of these

10. Alloying elements present in Haynes stellite, which has superior performance than high speed steel, are____________________?

    A. Nickel, cobalt & chromium
    B. Tungsten, chromium & cobalt
    C. Manganese, chromium & cobalt
    D. Tungsten, molybdenum & nickel