Estimate the load lifted by the crane, and (b) quantity of water used when the load is lifted through a height of 10 m.

1.An air vessel in the delivery side of a reciprocating pump

 

(a) maintains steady discharge output

(b) prevents cavitation in the pump

(c) enables the pump to run at higher speeds

(d) enables the suction head to be increase.

2. The chief function of an air vessel in the delivery side of a reciprocating pump is to obtain

(a) reduction in suction head (b) rise in delivery head

(c) continuous supply of discharge at uniform rate

(d) increase in the discharge magnitude

3. Consider the following statements:

Air vessels are fitted to the suction side of a reciprocating pump

(1) to achieve higher speed without separation

(2) reduce work done in overcoming frictional resistance

(3) have uniform discharge

(4) avoid excessive pressure fluctuation and vibration

The correct statements are

(a) 1, 2 and 4 (b) 1 and 2 only

(c) 3 and 4 only (d) 2, 3 and 4

4. Chief objective of using air vessels in the suction side of reciprocating pumps

is to

(a) increase the delivery head

(b) reduce suction head

(c) minimise delivery head fluctuation

(d) reduce accelerating headP

5. The ram in the jigger of a hydraulic crane has a diameter of 25 cm and the

jigger has a velocity ratio of 8:1. Water is supplied to the jigger at a pressure

of 110 bars and the crane mechanism has an efficiency of 60%. (a) Estimate

the load lifted by the crane, and (b) quantity of water used when the load is

lifted through a height of 10 m. [Ans: W = 40.5 kN, V = 6.136 Litres]

 

find the cost of your paper

Explain why attenuation is not a big problem in PET.

Consider a 2-D object consisting of two triangle compartments, as shown in Figure P9.4. Suppose a solution containing a 511 KeV gamma ray emitting radionuclide with concentration f = 0.5….

Give the mean and the variance of the reconstructed image, mean[ˆ f(x, y)] and var[ˆ f(x, y)].

Ignoring the inverse square law and attenuation, an approximate reconstruction for SPECT imaging is given by where c˜() =  {||W()} and W() is a rectangular windowing filter that cuts off at = 0…..

Find the numerical responses in each to an event in crystal C(4, 6).

Suppose a PET detector comprises four square PMTs (arranged as a 2 by 2 matrix) and a single BGO crystal with slits made in such a way that it is….