Questions 11–20 of 65. Imported answers require independent review unless marked reviewed.

Topic practice 65 questionsPage 2 of 7

Question 11

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EEMCQ1 markNeeds review
For a given vector

, the vector normal to the plane defined by

is
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Question 12

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EEMCQ1 markNeeds review
For the block diagram shown in the figure, the transfer function

is
Diagram for Electrical Engineering question 12

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Question 13

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EEMCQ1 markNeeds review
In the Nyquist plot of the open-loop transfer function

correspond to the feedback loop shown in the figure, the infinite semi-circular arc of the Nyquist contour in

-plane is mapped into a point at
Diagram for Electrical Engineering question 13

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Question 14

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Consider a unity-gain negative feedback system consisting of the plant

(given below) and a proportional-integral controller. Let the proportional gain and integral gain be 3 and 1, respectively. For a unit step reference input, the final values of the controller output and the plant output, respectively, are

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Question 15

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EEMCQ1 markNeeds review
The following columns present various modes of induction machine operation and the ranges of slip
Column A: Mode of operation
Column B: Range of Slip
a. Running in generator mode
p) From 0.0 to 1.0
b. Running in motor mode
q) From 1.0 to 2.0
c. Plugging in motor mode
r) From -1.0 to 0.0
The correct match between the elements in column A with those of column B is
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Question 16

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A 10-pole, 50 Hz, 240 V, single phase induction motor runs at 540 RPM while driving rated load. The frequency of induced rotor currents due to backward field is
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Question 17

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A continuous-time system that is initially at rest is described by

, where

is the input voltage and

is the output voltage. The impulse response of the system is
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Question 18

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The Fourier transform

of the signal

is given by

Which one of the following statements is true?
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Question 19

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The Z-transform of a discrete signal

is

Which one of the following statements is true?
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Question 20

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EEMCQ1 markNeeds review
For the three-bus power system shown in the figure, the trip signals to the circuit breakers B₁ to B₉ are provided by overcurrent relays R₁ to R₉, respectively, some of which have directional properties also. The necessary condition for the system to be protected for short circuit fault at any part of the system between bus 1 and the R-L loads with isolation of minimum portion of the network using minimum number of directional relays is
Diagram for Electrical Engineering question 20

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