Questions 61–70 of 360. Imported answers require independent review unless marked reviewed.

Topic practice 360 questionsPage 7 of 36

Question 16

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Let a continuous-time signal be

, where

and

is in seconds. The fundamental period of magnitude of

, in seconds, is
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Question 17

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The minimized expression of the Boolean function Y(P, Q, R) implemented by the multiplexer (MUX) circuit shown in the figure is
Diagram for Instrumentation Engineering question 17

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Question 18

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The 4-bit signed 2’s complement form of

is
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Question 19

Open question
INMCQ1 markNeeds review
An infinite sheet of uniform charge

is placed on

plane. The medium surrounding the sheet has a relative permittivity of 10. The electric flux density, in

, at a point P(0, 0, 5) is
Note:

,

, and

are unit vectors along the x, y, and z directions, respectively.
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Question 20

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For the ideal opamp based circuit shown in the figure, the ratio

is
Diagram for Instrumentation Engineering question 20

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Question 21

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In a single-phase AC circuit, the power consumed by load resistance

for an excitation

is measured using a wattmeter. The same wattmeter is connected in two different topologies, Topology-A and Topology-B, as shown in the figure. Different branch currents and voltage drops are also marked in the figure. Among the following options, the condition that ensures low error in the wattmeter reading for both the topologies is
Diagram for Instrumentation Engineering question 21

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Question 22

Open question
INMCQ1 markNeeds review
Match the following sensors with their most suitable applications.
Sensor
Application
P Rotary Variable Differential Transformer
I Vacuum measurement
Q Thermocouple
II Force measurement
R Ionization Gauge
III Angular displacement measurement
S Strain Gauge
IV Temperature measurement
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Question 23

Open question
INMCQ1 markNeeds review
A 3½ digit digital voltmeter has a specified accuracy of

. If it is used to measure 10 V DC voltage, the error in the measurement would be
Note: Accuracy of the digital voltmeter is expressed as ± (% of reading + digit).
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Question 24

Open question
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The circuit shown in Figure (a) can be represented using its equivalent T-model as shown in Figure (b). The values of the inductances

,

, and

in the equivalent T-model are
Diagram for Instrumentation Engineering question 24

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Question 25

Open question
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Three parallel admittances

,

, and

connected in parallel with a voltage source

, draw a total current

from the source. The currents flowing through each of these admittances are

,

, and

, respectively. Let

. The phase relation between

and

is
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