Questions 201–210 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 21 of 65

Question 6

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Residency is a famous housing complex with many well-established individuals among its residents. A recent survey conducted among the residents of the complex revealed that all of those residents who are well established in their respective fields happen to be academicians. The survey also revealed that most of these academicians are authors of some best-selling books.
Based only on the information provided above, which one of the following statements can be logically inferred with certainty?
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Question 7

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Ankita has to climb 5 stairs starting at the ground, while respecting the following rules:
At any stage, Ankita can move either one or two stairs up.
At any stage, Ankita cannot move to a lower step.
Let

denote the number of possible ways in which Ankita can reach the

stair. For example,

.
The value of

is _____.
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Question 8

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The information contained in DNA is used to synthesise proteins that are necessary for the functioning of life. DNA is composed of four nucleotides: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G). The information contained in DNA can then be thought of as a sequence of these four nucleotides: A, T, C, and G. DNA has coding and non-coding regions. Coding regions—where the sequence of these nucleotides are read in groups of three to produce individual amino acids—constitute only about 2% of human DNA. For example, the triplet of nucleotides CCG codes for the amino acid glycine, while the triplet GGA codes for the amino acid proline. Multiple amino acids are then assembled to form a protein.
Based only on the information provided above, which of the following statements can be logically inferred with certainty?
(i) The majority of human DNA has no role in the synthesis of proteins. (ii) The function of about 98% of human DNA is not understood.
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Question 9

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Which one of the given figures P, Q, R and S represents the graph of the following function?

Diagram for Instrumentation Engineering question 9

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Question 10

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An opaque cylinder (shown below) is suspended in the path of a parallel beam of light, such that its shadow is cast on a screen oriented perpendicular to the direction of the light beam. The cylinder can be re-oriented in any direction within the light beam. Under these conditions, which one of the shadows P, Q, R, and S is NOT possible?
Diagram for Instrumentation Engineering question 10

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Question 11

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Choose solution set

corresponding to the systems of two equations

Note:

denotes the set of real numbers
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Question 12

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Inductance of a coil is measured as 10 mH, using an LCR meter, when no other objects are present near the coil. The LCR meter uses a sinusoidal excitation at 10 kHz. If a pure copper sheet is brought near the coil, the same LCR meter will read__________.
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Question 13

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Which of the following flow meters offers the lowest resistance to the flow?
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Question 14

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Pair the quantities (p) to (s) with the measuring devices (i) to (iv).
(i) Linear Variable Differential Transformer (LVDT) (ii) Thermistor (iii) Strain gauge (iv) Diaphragm
(p) Torque (q) Pressure (r) Linear position (s) Temperature
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Question 15

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Capacitance ‘

’ of a parallel plate structure is calculated as 20 pF using

, where

is the permittivity of free space,

is the relative permittivity of the dielectric,

is the overlapping area of the electrodes and

is the distance between them. The value of

is then measured using an LCR meter. If the meter is assumed to be ideal and it introduces no error due to cable capacitance, which one of the following readings is likely to be correct?
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