31. Multiple inlet system of air cooling of turbo-alternators can be used for machines of rating upto

10 MW
30 MW
60 MW
150 MW

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of rating upto" class="read-more button" href="https://exam.pscnotes.com/mcq/multiple-inlet-system-of-air-cooling-of-turbo-alternators-can-be-used-for-machines-of-rating-upto/#more-56791">Detailed SolutionMultiple inlet system of air cooling of turbo-alternators can be used for machines of rating upto

32. Which of the following methods does not take into account the maximum temperature rise under variable loadconditions ?

Equivalent power method
Equivalent current method
Method of average losses
Equivalent torque method

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href="https://exam.pscnotes.com/mcq/which-of-the-following-methods-does-not-take-into-account-the-maximum-temperature-rise-under-variable-loadconditions/#more-56674">Detailed SolutionWhich of the following methods does not take into account the maximum temperature rise under variable loadconditions ?

33. In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be

unity
0.5
0.3
zero

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power factor of the load must be" class="read-more button" href="https://exam.pscnotes.com/mcq/in-a-3-phase-power-measurement-by-two-wattmeter-method-the-reading-of-one-of-the-wattmeter-was-zero-the-power-factor-of-the-load-must-be/#more-56670">Detailed SolutionIn a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be

34. A sensitive galvanometer produces large deflection for a

small value of current
large value of current
large value of power
large value of voltage E. none of the above

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deflection for a" class="read-more button" href="https://exam.pscnotes.com/mcq/a-sensitive-galvanometer-produces-large-deflection-for-a/#more-56425">Detailed SolutionA sensitive galvanometer produces large deflection for a

35. Alternating current is measured by

induction ammeter
permanent magnet type ammeter
electrostatic ammeter
moving iron repulsion type voltmeter

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by" class="read-more button" href="https://exam.pscnotes.com/mcq/alternating-current-is-measured-by/#more-56403">Detailed SolutionAlternating current is measured by

36. The desirable static characteristics of a measuring system are

accuracy and reproducibility
accuracy, sensitivity and reproducibility
drift and dead zone
static error

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are" class="read-more button" href="https://exam.pscnotes.com/mcq/the-desirable-static-characteristics-of-a-measuring-system-are/#more-56034">Detailed SolutionThe desirable static characteristics of a measuring system are

37. ________ cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall

Direct
Indirect
Conventional
Any of the above

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213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube losses to a cooling medium circulating within the winding insulation wall" class="read-more button" href="https://exam.pscnotes.com/mcq/________-cooling-is-the-process-of-dissipating-the-armature-and-field-winding-losses-to-a-cooling-medium-circulating-within-the-winding-insulation-wall/#more-56011">Detailed Solution________ cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall

38. Which of the following methods is used for air cooling of turbo-alternators ?

One sided axial ventilation
Two sided axial ventilation
Multiple inlet system
All of the above

Detailed SolutionWhich

of the following methods is used for air cooling of turbo-alternators ?

39. The cold rolled grain oriented steel has ______ permeability in the direction of the grain orientation.

minimum
maximum
nil
none of the above

Detailed SolutionThe cold rolled grain oriented

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steel has ______ permeability in the direction of the grain orientation.

40. The weight of copper of both armature and field windings decreases with _____ in number of poles.

increase
decrease
either of the above
none of the above

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decreases with _____ in number of poles." class="read-more button" href="https://exam.pscnotes.com/mcq/the-weight-of-copper-of-both-armature-and-field-windings-decreases-with-_____-in-number-of-poles/#more-55809">Detailed SolutionThe weight of copper of both armature and field windings decreases with _____ in number of poles.

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