In compression, a prism of brittle material will break________________?

Related Mcqs:

1. Isothermal compression efficiency, even when running at high speed, can be approached by using A. multi-stage compression B. cold water spray C. both A. and B. above D. fully insulating the cylinder E. high stroke_________________?

   Isothermal compression efficiency, even when running at high speed, can be approached by using
   A. multi-stage compression
   B. cold water spray
   C. both A. and B. above
   D. fully insulating the cylinder
   E. high stroke

2. The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as________________?

   A. hysteresis
   B. creep
   C. visco elasticity
   D. Boeschinger effect
   E. inelasticity

3. Adiabatic compression is one in which___________________?

   A. temperature during compression remains constant
   B. no heat leaves or enters the compressor cylinder during cornpression
   C. temperature rise follows a linear relationship
   D. work done is maximum
   E. entropy decreases

4. The work done per unit mass of air in compression will’be least when n is equal to______________?

   A. 1
   B. 1.2 ,
   C. 1.3
   D. 1.4
   E. 1.5

5. Compression efficiency is compared against_____________________?

   A. ideal compression
   B. adiabatic compression
   C. botii isothermal and adiabatic compression
   D. isentropic compression
   E. isothermal compression

6. The compression ratio of motor cars is___________________?

   A. 5
   B. 7
   C. 10
   D. 13
   E. 16

7. The m.e.p. of a diesel cycle having fixed compression ratio with increase in cut-off will_________________?

   A. increase
   B. decreae
   C. be unaffected
   D. depend on other factors
   E. unpredictable

8. In petrol engine using a fixed octane rating fuel and fixed compression ratio, super charging will_________________?

   A. increase the knocking tendency
   B. decrease the knocking tendency
   C. not affect the knocking tendency
   D. increase or decrease knocking tendency depending on strength and time of spark
   E. unpredictable

9. In the case of compression ignition engine, the %age of CO in exhaust gases is________________?

   A. Zero
   B. 5-10%
   C. Depends on load
   D. Considerable percent

10. The efficiency of the ideal diesel cycle is ________ than that of Otto cycle, for the same compression ratio

    A. Higher
    B. Lower
    C. Equal
    D. None of these

    Submitted by: Faheem Zaman Dhaunroo