Design Electrical Machines Design Fan Online Exam Quiz
Design Electrical Machines Design Fan GK Quiz. Question and Answers related to Design Electrical Machines Design Fan. MCQ (Multiple Choice Questions with answers about Design Electrical Machines Design Fan
What is the range of the coefficients of hydrodynamic resistances for the rectangular edges at inlet?
Options
A : 10-20 * 10-3
B : 30 * 10-3
C : 20-30 * 10-3
D : 20-25 * 10-3
What is the range of the difference of air temperature at inlet and outlet?
Options
A : 11-150C
B : 10-130C
C : 12-160C
D : 14-180C
What is the range of the coefficients of hydrodynamic resistances for the rounded edges at inlet?
Options
A : 12-20 * 10-3
B : 10-20 * 10-3
C : 15-20 * 10-3
D : 12-30 * 10-3
How many data are required for the design of fan?
Options
A : 3
B : 4
C : 5
D : 6
What is the range of the coefficients of hydrodynamic resistances for the protruding edges at inlet?
Options
A : 40-50 * 10-3
B : 40-60 * 10-3
C : 30-50 * 10-3
D : 30-40 * 10-3
How many steps are required in the design of the fan?
Options
A : 7
B : 8
C : 9
D : 6
What factor/factors are required to evaluate the hydrodynamic resistance?
Options
A : area of cross section
B : hydrodynamic coefficients
C : area of cross section or hydrodynamic coefficients
D : area of cross section and hydrodynamic coefficients
What is the formula for the area of outlet opening?
Options
A : area of outlet opening = maximum air passing per second / 0.42 * peripheral speed
B : area of outlet opening = maximum air passing per second * 0.42 * peripheral speed
C : area of outlet opening = maximum air passing per second * 0.42 / peripheral speed
D : area of outlet opening = 1/maximum air passing per second * 0.42 * peripheral speed
What is the formula for the fundamental relationship for the design of the ventilation system?
Options
A : head of air inside the machine = hydrodynamic resistance * volume of air passing2
B : head of air inside the machine = hydrodynamic resistance + volume of air passing2
C : head of air inside the machine = hydrodynamic resistance – volume of air passing2
D : head of air inside the machine = hydrodynamic resistance / volume of air passing2
What is the formula for the maximum air passing per second at maximum efficiency?
Options
A : maximum air passing = 2 * volume of air passing per second
B : maximum air passing = volume of air passing per second
C : maximum air passing = 2 / volume of air passing per second
D : maximum air passing = volume of air passing per second / 2
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