Electrical machine design

31. If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is

10°
80°
120°
170°

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class="read-more button" href="https://exam.pscnotes.com/mcq/if-the-current-in-a-capacitor-leads-the-voltage-by-80a-the-loss-angle-of-the-capacitor-is/#more-46931">Detailed SolutionIf the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is

33. Which of the following is the basic consideration in the design of insulation ?

Electrical considerations
Mechanical considerations
Thermal considerations
All of the above

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design of insulation ?" class="read-more button" href="https://exam.pscnotes.com/mcq/which-of-the-following-is-the-basic-consideration-in-the-design-of-insulation/#more-46801">Detailed SolutionWhich of the following is the basic consideration in the design of insulation ?

34. The time taken by the machine to attain 0.632 of its final steady temperature rise is called

heating time constant
cooling time constant
either (A) or (B)
none of the above

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class="read-more button" href="https://exam.pscnotes.com/mcq/the-time-taken-by-the-machine-to-attain-0-632-of-its-final-steady-temperature-rise-is-called/#more-46732">Detailed SolutionThe time taken by the machine to attain 0.632 of its final steady temperature rise is called

35. Volt box is a component to

extend voltage range
measure voltage
compare voltage in a box
none of the above

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a component to" class="read-more button" href="https://exam.pscnotes.com/mcq/volt-box-is-a-component-to/#more-46695">Detailed SolutionVolt box is a component to

36. Resistances can be measured with the help of

wattmeters
voltmeters
ammeters
ohmmeters and resistance bridges E. all of the above

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class="read-more button" href="https://exam.pscnotes.com/mcq/resistances-can-be-measured-with-the-help-of/#more-46523">Detailed SolutionResistances can be measured with the help of

37. D.C. windings are

sometimes 2-layer type
never 2-layer type
windings are A. sometimes 2-layer type B. never 2-layer type C. always 2-layer type

Detailed SolutionD.C. windings are

38. Is an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,

Tangent galvanometer
Meggar
Current transformer
None of the above

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448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube relative to earth and one another," class="read-more button" href="https://exam.pscnotes.com/mcq/is-an-instrument-which-measures-the-insulation-resistance-of-an-electric-circuit-relative-to-earth-and-one-another/#more-46248">Detailed SolutionIs an instrument which measures the insulation resistance of an electric circuit relative to earth and one another,

39. The change in flux linkages can be caused in which of the following ways ?

The flux is constant with respect to time and is stationary and the coil moves through it
The coil is stationary with respect to flux and the flux varies in magnitude with respect to time
Both the changes mentioned above occur together, i.e., the coil moves through a time vary-ing field
All of the above

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132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube ?" class="read-more button" href="https://exam.pscnotes.com/mcq/the-change-in-flux-linkages-can-be-caused-in-which-of-the-following-ways/#more-46245">Detailed SolutionThe change in flux linkages can be caused in which of the following ways ?

40. A moving-coil permanent-magnet instrument can be used as _____ by using a low resistance shunt.

ammeter
voltmeter
flux-meter
ballistic galvanometer

Detailed SolutionA moving-coil

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448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube

permanent-magnet instrument can be used as _____ by using a low resistance shunt.
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