Recent questions and answers

1 1 vote
1 1 answer
205
205 views
The open-loop transfer function of the system shown in the figure, is$$ G(s)=\frac{K s(s+2)}{(s+5)(s+7)}$$For $K \geq 0$, which of the following real axis point(s) is/are...
4 4 votes
2 2 answers
1.7k
1.7k views
Suppose signal $y(t)$ is obtained by the time-reversal of signal $x(t)$, i.e., $y(t)=x(-t),-\infty<t<\infty$. Which one of the following options is always true for the co...
1 1 vote
3 3 answers
562
562 views
The I-V characteristics of the element between the nodes X and Y is best depicted by 
0 0 votes
1 1 answer
454
454 views
The inverse Laplace transform of $H(s)=\frac{s+3}{s^{2}+2s+1}$ for $t \geq0$$3te^{-t}+e^{-t}$$3e^{-t}$$2te^{-t}+e^{-t}$$4te^{-t}+e^{-t}$
2 2 votes
2 answers 2 answers
1.7k
1.7k views
If $\text{P, Q, R, S}$ are four individuals, how many teams of size exceeding one can be formed, with $\text{Q}$ as a member?$5$$6$$7$$8$
3 3 votes
1 1 answer
458
458 views
Scores obtained by two students $P$ and $Q$ in seven courses are given in the table below. Based on the information given in the table, which one of the following stateme...
3 3 votes
1 1 answer
337
337 views
Consider the set $S$ of points $(x, y) \in \mathfrak{R}^{2}$ which minimize the real valued function$$ f(x, y)=(x+y-1)^{2}+(x+y)^{2}$$Which of the following statements is...
0 0 votes
1 1 answer
279
279 views
After Rajendra Chola returned from his voyage to Indonesia, he ________ to visit the temple in Thanjavur.Was wishingIs wishingWishedHad wished
0 0 votes
1 1 answer
300
300 views
The data given in the following table summarizes the monthly budget of an average household.$$\begin{array}{|l|c|c|} \hline \textbf{Category} & \textbf{Amount(Rs.)} \\\hl...
0 0 votes
1 1 answer
280
280 views
"The hold of the nationalist imagination on our colonial past is such that anything inadequately or improperly nationalist is just not history."Which of the following sta...
0 0 votes
1 1 answer
358
358 views
If a continuous function $f(x)$ does not have a root in the interval $[a, b]$, then which one of the following statements is TRUE?$f(a) . f(b)=0$$f(a) . f(b) < 0$$f(a) . ...
1 1 vote
1 1 answer
410
410 views
If $(1.001)^{1259}=3.52$ and $(1.001)^{2062}=7.85,$ then $(1.001)^{3321}=?$$2.23$$4.33$$11.37$$27.64$
1 1 vote
1 1 answer
300
300 views
What is the value of $\left(\frac{3^{81}}{27^{4}}\right)^{\frac{1}{3}}$ ?$3^{13}$$3^{96}$$3^{23}$$3^{69}$
1 1 vote
1 1 answer
537
537 views
Three points in the $x-y$ plane are $(-1,0.8),(0,2.2)$ and $(1,2.8).$ The value of the slope of the best fit straight line in the least square sense is___________(Round o...
0 0 votes
2 2 answers
330
330 views
The maximum value of $f(x) = x^3-9x^2+24x+5$ in the interval $[1,6]$ is$21$$25$$41$$46$
0 0 votes
1 1 answer
289
289 views
Let $f(x)=xe^{-x}$ . The maximum value of the function in the interval $(0,\infty)$ is$e^{-1}$$e$$1-e^{-1}$$1+e^{-1}$
0 0 votes
1 1 answer
284
284 views
The minimum value of the function $f(x)=x^3-3x^2-24x+100$ in the interval $[-3,3]$ is$20$$28$$16$$32$
0 0 votes
1 1 answer
299
299 views
Minimum of the real valued function $f(x)=(x-1)^{2/3}$ occurs at $x$ equal to$-\infty$$0$$1$$\infty$
0 0 votes
1 1 answer
256
256 views
The maximum value attained by the function. $f(x) = x(x-1) (x-2)$ in the interval $[1, 2]$ is ___________.
0 0 votes
1 1 answer
283
283 views
Let $f(x) = 3x^3-7x^2+5x+6$. The maximum value of $f(x)$ over the interval $[0,2]$ is ________ (up to one decimal place).
0 0 votes
1 1 answer
277
277 views
For real numbers, $\text{x}$ and $\text{y}$, with $y=3x^{2}+3x+1$, the maximum and minimum value of $\text{y}$ for $\text{x}$ $\in \left [ -2,0 \right ]$ are respectively...
0 0 votes
1 1 answer
450
450 views
Let $f\left ( x \right )$ be a real-valued function such that ${f}'\left ( x_{0} \right )=0$ for some $x _{0} \in\left ( 0,1 \right ),$ and ${f}''\left ( x \right ) 0$ fo...
1 1 vote
1 1 answer
353
353 views
A function $f(x)$ is defined as$f(x)= \begin{cases} e^{x}, & x < 1 \\ \text{In } x+ax^{2}+bx, & x\geq 1 \end{cases}$, where $x \in \mathbb{R}$Which one of the followin...
5 5 votes
1 1 answer
601
601 views
In the given figure, $EF$ and $HJ$ are coded as $30$ and $80$, respectively. Which one among the given options is most appropriate for the entries marked $(i)$ and $(ii)$...
2 2 votes
1 1 answer
180
180 views
The condensers of 30μF & 60μF capacitances are connected in series across a 180V supply. After charging they are removed from the supply and are connected in parallel wit...
2 2 votes
1 1 answer
326
326 views
Consider the following equation in a $2-\text{D}$ real-space. $\left|x_{1}\right|^{p}+\left|x_{2}\right|^{p}=1 \text { for } p>0$ Which of the following statement(s) is/a...
0 0 votes
1 1 answer
1.7k
1.7k views
​​​​In the following figure,\[\begin{array}{c}\mathrm{CD}=5 \mathrm{~cm}, \mathrm{BE}=10 \mathrm{~cm}, \mathrm{AE}=12 \mathrm{~cm}, \\\angle \mathrm{DAB}=\angle \mathrm{D...
4 4 votes
1 1 answer
410
410 views
The relationship between two variables $x$ and $y$ is given by $x+p y+q=0$ and is shown in the figure. Find the values of $p$ and $q$.Note: The figure shown is representa...
1 1 vote
1 1 answer
706
706 views
Good : Evil :: Genuine : $\_\_\_\_\_\_\_$Select the most appropriate option to complete the analogy.CounterfeitContrabandCounterfoilCounterpart
1 1 vote
1 1 answer
436
436 views
Kavya $\_\_\_\_\_$ go to work yesterday as she $\_\_\_\_\_\_\_$ feeling well.Select the most appropriate option to complete the above sentence.didn't; isn'twouldn't; wasn...
0 0 votes
1 1 answer
1.4k
1.4k views
​​​​​A three phase, $50 \mathrm{~Hz}, 6$ pole induction motor runs at $960 \mathrm{rpm}$. The stator copper loss, core loss, and the rotational loss of the motor can be n...
0 0 votes
1 1 answer
859
859 views
During a power failure, a domestic household uninterruptible power supply (UPS) supplies AC power to a limited number of lights and fans in various rooms. As per a Newton...
5 5 votes
0 0 answers
357
357 views
Each row of Column-I has three items and each item is represented by a circle in Column-II. The arrangement of circles in Column-II represents the relationship among the ...
0 0 votes
0 0 answers
362
362 views
Identify the option that has the most appropriate sequence such that a coherent paragraph is formed:It is because deer, like most of the animals that tigers normally prey...
0 0 votes
0 0 answers
966
966 views
Spheres of unit diameter are centered at $(l, m, n)$ where $l, m$, and $n$ take every possible integer values.The distance between two spheres is computed from the center...
1 1 vote
0 0 answers
376
376 views
In the triangle $P Q R$, the lengths of $P T$ and $T R$ are in the ratio of $3:2$.$ST$ is parallel to $QR$. Two semicircles are drawn with PS and PQ as diameters, as show...
0 0 votes
0 0 answers
255
255 views
Let $v_{1}$ and $v_{2}$ be the two eigenvectors corresponding to distinct eigenvalues of a $3 \times 3$ real symmetric matrix. Which one of the following statements is tr...
0 0 votes
0 0 answers
204
204 views
Let $\boldsymbol{A}=\left[\begin{array}{ccc}1 & 1 & 1 \\ -1 & -1 & -1 \\ 0 & 1 & -1\end{array}\right]$, and $\boldsymbol{b}=\left[\begin{array}{c}1 / 3 \\ -1 / 3 \\ 0\end...
0 0 votes
0 0 answers
165
165 views
Let $P=\left[\begin{array}{ccc}2 & 1 & 0 \\ -1 & 0 & 0 \\ 0 & 0 & 1\end{array}\right]$ and let $I$ be the identity matrix. Then $P^{2}$ is equal to$2 P-I$$P$$I$$P+I$
0 0 votes
0 0 answers
209
209 views
Consider discrete random variables $X$ and $Y$ with probabilities as follows:$$ \begin{array}{l} P(X=0 \text { and } Y=0)=\frac{1}{4} \\ P(X=1 \text { and } Y=0)=\frac{1}...
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