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Statement: There were different streams of freedom movements in colonial India carried out by the moderates, liberals, radicals, socialists, and so on. Which one of the following is the best inference from the above statement
Nationalism in India is heterogeneous.
Nationalism in India is homogeneous.
The emergence of nationalism in colonial India led to our Independence.
Nationalism in India emerged in the context of colonialism.
Choose the grammatically CORRECT sentence
Two and two become four.
Two and two make four.
Two and two add four.
Two and two are four.
Bits 1 and 0 are transmitted with equalprobability.
At the receiver, the pdf of the respective received signals for both bits are as shownbelow.
The optimum threshold to achieve minimum bit error rate
(BER) is
1/2
4/5
1
3/2
Bits 1 and 0 are transmitted with equalprobability.
At the receiver, the pdf of the respective received signals for both bits are as shownbelow.
If the detection threshold is 1, the BER will be
1/4
1/8
1/16
1/2
The signal flow graph for a system is givenbelow.
The transfer function Y(s)/U(s) for this system is
(s + 1)/(s2 + 6 s + 2)
1/(5 s2 + 6 s + 2)
(s + 1)/(s2 + 4 s + 2)
(s + 1)/(5 s2 + 6 s + 2)
The following arrangement consists of an ideal transformer and an attenuator which attenuates by a factor of 0.8. An ac voltage VWX1 = 100 V applied across WX to get an open circuit voltage VYZ1 across YZ. Next, an ac voltage VYZ2 100V is applied across YZ to get an open circuit voltage VWX2 across WX. Then, VYZ1/VWX1, VWX2/VYZ2 are respectively,
125/100 and 80/100
100/100 and 100/100
100/100 and 80/100
80/100 and 80/100
Let g(t) = e-πt2, and h(t ) is a filter matched to g (t )
. If g (t ) is applied as input to h(t ) , then the Fourier transform of the output is
e-π|f|
e-2πf2
e-πf2/2
e-πf2
A source vs(t) = V cos πt has an internal impedance of
(4 + j3)Ω . If a purely resistive load connected to this source has to extract the maximum power out of the source, its value in Ω should be
4
5
3
7
Assuming zero initial condition, the response y (t) of the system given below to a unit step input u(t) is
u (t)
e-t u(t)
t u (t)
t2/2 u(t)
The bit rate of a digital communication system is R kbits/s. The modulation used is 32-QAM.
The minimum bandwidth required for ISI free transmission is
R/5 kHz
R/5 Hz
R/10 kHz
R/10 Hz
Consider a delta connection of resistors and its equivalent star connection as shownbelow.
If all elements of the delta connection are scaled by a factor k, k> 0, the elements of the corresponding star equivalent will be scaled by a factor of
k
√k
k2
1/k
The Bode plot of a transfer function G(s) is shown in the figurebelow.
The gain
(20 log |G(s)| ) is 32 dB and -8 dB at 1 rad/s and 10 rad/srespectively.
The phase is negative for all ω. Then G(s) is
32/s2
39.8/s
32/s
39.8/s2
Two systems with impulse responses h1 (t) and h2 (t) are connected incascade.
Then the overall impulse response of the cascaded system is given by
product of h1 (t) and h2 (t)
subtraction of h2 (t) and h1 (t)
sum of h1 (t) and h2 (t)
convolution of h1 (t) and h2 (t)
A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the firstfloor.
The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the otherswitch.
The logic of switching of the bulb resembles
an XOR gate
a NAND gate
an OR gate
an AND gate
A and B arefriends.
They decide to meet between 1 PM and 2 PM on a givenday.
There is a condition that whoever arrives first will not wait for the other for more than 15minutes.
The probability that they will meet on that day is
9/16
1/16
7/16
1/4
The data given in the following table summarizes the monthly budget of an averagehousehold.
The approximate percentage of the monthly budget NOT spent on savings is
86%
14%
81%
10%
Choose the most appropriate alternative from the options given below to complete the following sentence: If the tired soldier wanted to lie down, he ___ the mattress out on the balcony
shall take
will have taken
should take
should have taken
The transfer function of a compensator is given as Gc (s) = (s +
a)/(s +
b).The phase of the above lead compensator is maximum at
√3 rad/s
√6 rad/s
1/√3 rad/s
√2 rad/s
With 10 V dc connected at port A in the linear nonreciprocal two-port network shown below, the following were observed: (i) 1 Ω connected at port B draws a current of 3 A (ii) 2.5 Ω connected at port B draws a current of 2 AFor the same network, with 6 V dc connected at port A, 1 Ω connected at port B draws 7/3 A If 8 V dc is connected to port A, the open circuit voltage at port B is
6 v
9 V
8 V
7 V
Given that A = and I = the value of A3 is
17 A + 15 I
19 A + 30 I
17 A + 21 I
15 A + 12 I
1
2
3
6
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