Design Electrical Machines Design Tank Online Exam Quiz
Design Electrical Machines Design Tank GK Quiz. Question and Answers related to Design Electrical Machines Design Tank. MCQ (Multiple Choice Questions with answers about Design Electrical Machines Design Tank
What is the rating of the transformer for the voltage of about 11 kV?
Options
A : 1000-2000 kVA
B : 100-3000 kVA
C : 1000-5000 kVA
D : 100-500 kVA
What is the rating of the transformer for the voltage of above 11 kV upto 33 kV?
Options
A : 1000-5000 kVA
B : less than 1000 kVA
C : above 1000 kVA
D : 100-500 kVA
What is the loss dissipated by tubes by convection, given area of the tubes = 3.5?
Options
A : 12.3 W per °c
B : 2.51 W per °c
C : 5.3 W per °c
D : 30.8 W per °c
What is the range of the diameter of the tubes used?
Options
A : 50-60 mm
B : 60-70 mm
C : 70-80 mm
D : 50-70 mm
What is the formula for height of transformer tank?
Options
A : height of transformer tank = Height of transformer frame + clearance height between the assembled transformer and tank
B : height of transformer tank = Height of transformer frame * clearance height between the assembled transformer and tank
C : height of transformer tank = Height of transformer frame/clearance height between the assembled transformer and tank
D : height of transformer tank = Height of transformer frame – clearance height between the assembled transformer and tank
What is the usage of the tanks with tubes?
Options
A : if the temperature rise with plain tank is very low
B : if the temperature rise with plain tank is very high
C : if the temperature rise is zero
D : if the temperature rise with plain tank exceeds the specific limits
How is the circulation of oil improved in tanks with tubes?
Options
A : it can be improved by using dissipating heat
B : it can be improved by using more effective air circulation
C : it can be improved by using more effect power flow
D : it can be improved by using more effective heads of pressure
What is the formula for the length of the tank?
Options
A : length of the tank = external diameter of h.v winding + clearance on each side between the winding and tank along the width
B : length of the tank = external diameter of h.v winding * clearance on each side between the winding and tank along the width
C : length of the tank = external diameter of h.v winding + 2*clearance on each side between the winding and tank along the width
D : length of the tank = external diameter of h.v winding / 2*clearance on each side between the winding and tank along the width
What is the formula for number of tubes?
Options
A : number of tubes = (1/ 8 * area of each tube) * (total loss / temperature rise with tubes – 12.5 * dissipating surface)
B : number of tubes = (1* 8 * area of each tube) * (total loss / temperature rise with tubes – 12.5 * dissipating surface)
C : number of tubes = (1/ 8 * area of each tube) / (total loss / temperature rise with tubes – 12.5 * dissipating surface)
D : number of tubes = (1/ 8 * area of each tube) + (total loss / temperature rise with tubes – 12.5 * dissipating surface)
What is the formula for temperature rise with tubes?
Options
A : temperature rise with tubes = total loss / dissipating surface*(12.5 + 8.8x)
B : temperature rise with tubes = total loss * dissipating surface*(12.5 + 8.8x)
C : temperature rise with tubes = total loss / dissipating surface / (12.5 + 8.8x)
D : temperature rise with tubes = total loss + dissipating surface*(12.5 + 8.8x)
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