MCQs of GENERAL DESIGN ASPECTS (Element of Electrical Design - 3160918)

Element of Electrical Design (3160918) MCQs

MCQs of GENERAL DESIGN ASPECTS

Showing 71 to 80 out of 84 Questions

71.

For the teeth having a small taper, ______________ method for the calculation of MMF for the teeth is used.

(a)	Graphical
(b)	Carter's
(c)	simpson's rule
(d)	(1/3)^rd Flux density

72.

Which one is the simplest method for the calculation of MMF for the teeth?

(a)	Graphical method
(b)	Carter's method
(c)	simpson's rule
(d)	(1/3)^rd Flux density

73.

Which of the following formula used to calculate MMF for the Teeth?

(a)	$A T = 800000 K_{g} B_{g} l_{g}$
(b)	$A T = H_{m e a n} h_{t}$
(c)	$A T = H_{m e a n} K_{g} B_{g} l_{g}$
(d)	$A T = 800000 h_{t}$

74.

The “real flux” passing through the teeth is always _______________ the total or “apparent flux”

(a)	Equal
(b)	greater than
(c)	less than
(d)	0.9 times

75.

The field form in the salient pole machine can be plotted by ____________________.

(a)	Carters fringe curves
(b)	Curvilinear square
(c)	Simpson’s rule
(d)	Carters fringe curves OR Curvilinear square

76.

What is the property of insulating materials?

(a)	Prevents the unwanted flow of current
(b)	Allows the unwanted flow of current
(c)	Increases the unwanted flow of current
(d)	Decreases the unwanted flow of current

77.

How should the properties of strength and dielectric strength in insulating materials?

(a)	High strength, low Dielectric strength
(b)	Low strength, low Dielectric strength
(c)	High strength, high Dielectric strength
(d)	Low strength, high Dielectric strength

78.

What is property of porosity and temperature change in insulating materials?

(a)	Less, less affected
(b)	Less, highly affected
(c)	High, highly affected
(d)	High, less affected

79.

How many insulation classes are present with respect to physical states and thermal stability (maximum permissible temperature rise) used in electrical equipment?

(a)	2 & 5 respectively
(b)	3 & 3 respectively
(c)	2 & 7 respectively
(d)	3 & 7 respectively

80.

How many insulation classes have their temperatures above 100°C?

(a)	2
(b)	4
(c)	6
(d)	3

Showing 71 to 80 out of 84 Questions