16 GATE Question Of The Day – Electromagnetics

A transmission line of characteristic impedance 50W is terminated by a 50 W load. When excited by a sinusoidal voltage source at 10GHz, the phase difference between two points spaced 2mm apart on the line is found to be p/4 radians. The phase velocity of the wave along the line is

(A)  0.8 ´ 10⁸ m / s

(B) 1.2 ´ 10⁸ m / s

(C) 1.6 ´ 10⁸ m / s

(D)  3 ´ 10⁸ m / s

15 GATE Question of The Day – Digital Electronics

 For the circuit shown in the following figure I₀-I₃ are inputs to the 4:1 multiplexer R(MSB) and S are control bits?

The output Z can be represented by

            (A)        PQ + PS +        

            (B)        P + PQ + 

            (C)        + QR + PQRS +    

            (D)        PQ + PQR + PQS + 

_{i request my Friends to not guess but solve the challenge!}

14 GATE Question Of The Day – Digital Electronics

What are the counting stages (Q₁, Q₂) for the counter shown in the figure below?

  (A)        11,10,00,11,10,….                                  (B)        01,10,11,00,01,….

  (C)        00,11,01,10,00,….                                  (D)        01,10,00,01,10,….

13 GATE Question Of The Day – Digital Electronics

In the following circuit, X is given by,

(A)        X =                 (B)        X = 

(C)        X =                                  (D)        X =    

One of the toughest question, will be ask in GATE 2013.

12 GATE Question of The Day – Digital Electronics Questions

Hi dear GATE aspirants! I am SouravMani.From today we are going to discuss Digital Electronics Questions on daily basis. hope you all co-operate and making use of it.
The logic functions implemented by the circuit below is (Ground implies a logic “0″)

A) F = AND(P,Q)
B) F = OR(P,Q)
C) F = XNOR(P,Q)
D) F = XOR(P,Q)
I kindly requesting of the GATE aspirants to justify yours valuable Answers.

11 GATE Question of the Day – General Aptitude and Digital Question

The question below consist of a pair of related words followed by four of words. Select the pair that best expresses the relation in the original pair:   Gladiator : Arena

A) dancer : stage
B) commuter : train
C) teacher : classroom
D) lawyer : courtroom

When the output Y is 1 

A) Data has changed from 0 to 1
B) Data has changed from 1 to 0
C) Changed in either direction
D) Not changed

10 GATE Question of the Day – General Aptitude and Digital Question

After seeing a good response from many GATE aspirants to my yesterday post GATE Question of the Day -  General Aptitude Question . Today i am going to post a GATE General Aptitude Question and a question from Digital Electronics. General Aptitude is common to all branches and Digital Electronics is common to CSE, ECE, EEE and Instrumentation.

The fuel consumed by a motorbike during a journey while traveling at different speed is given in the below graph

the distance covered during four laps of journey are shown in the table below

From the given data, We can conclude that the fuel consumed per kilometer was least during the lap

A)P  B)Q  C)R  D)S

 The output Y of the below circuit is always “1″ when?

A) Two are more of the inputs P, Q, R are “0″
B) Two are more of the inputs P, Q, R are “1″
C) Any odd number of the inputs P, Q, R are “0″
D) Any odd number of the inputs P, Q, R are “1″
Possible justify your answer, it will help many other to understand the problem clearly. Thanks for your answer. 
Fuel consumed per kilometer was least during the lap will be ‘Q’ since it will cover 90km/hr.so the correct answer is option B for 1st question. 
Detailed Answer for first question

1) For P laps bike has to travel 15KM at the mileage of 30KM/L so fuel consumption per KM is 0.0333 Litre (333 ml)
2)For Q laps bike has to travel 75 KM at the mileage of 90KM/L so fuel consumption per KM is 0.0111 litre (111 ml)
3)For R laps the bike has to travel 40KM at the mileage of 80KM/L(approximately) so fuel consumption per KM is 0.0125 litre (124 ml)
4)for S laps it has to travel 10KM at the mileage of 30KM/L so fuel consumption per KM is 0.0333 litre (333 ml)
Based on the above results the fuel consumption per KM during the Q Lap is less
For second question answer is B
Solution for the second question is
Y=(((PQ)’(QR)’)(PQ)’) = (((P’+Q’)(Q’+R’)(P’+Q’))=((P’Q'+P’R'+Q’+Q’R')(P’+Q’))
Y=(P’Q'+P’R'+P’Q'R’+Q’+Q’R')= PQ+QR+PR
So that two or more inputs are 1 for Y is always 1

9 GATE Question of the Day – General Aptitude and Mathematics Question

The horse has played a little known but very important role in the field of medicine. Horses were injected with toxins of diseases until their blood built up immunities. Then a serum was made from their blood. Serums to fight with diphtheria and tetanus were developed this way. It can be inferred from the passage, that horses were

(A) given immunity to diseases

(B) generally quite immune to diseases

(C) given medicines to fight toxins

(D) given diphtheria and tetanus serums

[Ans. B] From the passage it cannot be inferred that horses are given immunity as in (A), since the aim is to develop medicine and in turn immunize humans. (B) is correct since it is given that horses develop immunity after some time. Refer “until their blood built up immunities”. Even (C) is invalid since medicine is not built till immunity is developed in the horses. (D) is incorrect since specific examples are cited to illustrate and this cannot capture the essence.

The value of the integral where is the circle is given by

(A) 0
(B) 1/10
(C) 4/5
(D) 1

[Ans. A]

Guys after a short time i meet you through this GATE Question of the Day. Hope you all are preparing well for the gate 2013. Here after we can go without any interrupt. So guys ready to answer the questions. Possible give the detailed explanations. All the best.

8 GATE Question of The Day – Digital Electronics

The Boolean function realized by the logic circuit shown is?

(A)        F= Σm(0,1,3,5,9,10,14)                          (B)        F= Σm(2,3,5,7,8,12,13)

(C)        F= Σm(1,2,4,5,11,14,15)                        (D)        F= Σm(2,3,5,7,8,9,12)

Its a simple challenge to all the aspirants.!

7 GATE Question of The Day – Digital Electronics

Assuming that flip-flops are in reset condition initially, the count sequence observed at Q_A in the circuit shown is?

(A)        0010111…      

(B)        0001011…        

(C)        0101111…        

(D)        0110100…

Give your valuable answers and help yourself improved.

6 GATE Question of the Day – General Aptitude Question

The sum of n terms of the series 4+44+444+—— is


Please give the reason for your answer. All the best