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Statement (I) : When a bluff body moves at supersonic speed in still air, an attached shock wave is produced at its nose causing the flow to be subsonic behind the shock plane. Statement (II) : A normal shock always transforms supersonic flow into subsonic flow causing increase in pressure, temperature and entropy.
Given below are two statements, one is Assertion (A) and other is Reason (R). Assertion (A): When the placenta is implanted partially or completely over the lower uterine segment it is called placenta previa. Reason (R): The fertilized ovum drop down and implants in the lower uterine segment. Select the correct answer using the code given below :
In which absorber matrix material is arranged and the back absorber plate is eliminated?
Which type of absorber increases the heat transfer area over a simple flat plate absorber of the same capacity?
In which type of absorber plate is the overall flow direction is along the absorber glass plate?
Are these statements about the absorption true? Statement 1: Operating pressure should be low for an absorber. Statement 2: Operating temperature should be high for an absorber.
Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is: N + 2 = 6 log $$\left( {\frac{{{{\text{y}}_{{\text{in}}}}}}{{{{\text{y}}_{{\text{out}}}}}}} \right).$$
For 98% recovery of acetone, the number of trays required is/are
Which one of the following statements is correct with regard to the function of a shock absorber?
Which of the following acts as an insulator against heat, cold and as a shock-absorber in the body?
Which of the following is an example of a shock absorber?