PGCET Mechanical Question Paper - 2018 with Answer Key

PGCET Mechanical Question Paper - 2018 with Answer Key

46) Air enters a counter flow heat exchanger at 70 degree centigrade and leaves at 40 degree centigrade. Water enters at 30 degree centigrade and leaves at 50 degree centigrade. The LMTD in degree centigrade is

Answer is:

14.43

47) The quantity of water available for a hydro-electric station is 260 cubic meter/second, under a head of 1.73 m. Assuming the speed of the turbine to be 50 rpm, and their efficiency to be 82.5%. The number of turbines required is

Answer is:

3 turbines

48) Identify the type of turbo machinery for the following case: Power developed = 430 kW; Operating head = 300 m; Speed = 600 rpm.

Answer is:

Pelton wheel

49) A hydraulic turbine develops 1000 kW power for a head of 40 m. If the head is reduced to 20 m, the power developed (in kW) is

Answer is:

354

50) Fulkerson's rule is connected with

Answer is:

Numbering of event in PERT/CPM

7
8
9
10
11
12
13