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Saturday, 28 March 2015

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Aptitude question asked in companies written exams

Rahim plans to drive from city A to station C, at the speed of 70 km per hour, to catch a train arriving there from B. He must reach C at least 15 minutes before the arrival of the train. The train leaves B, located 500 km south of A, at 8:00 am and travels at a speed of 50 km per hour. It is known that C is located between west and northwest of B, with BC at 60° to AB. Also, C is located between south and southwest of A with AC at 30° to AB. The latest time by which Rahim must leave A and still catch the train is closest to



(1) 6:15 am
(2) 6:30 am
(3) 6:45 am
(4) 7:00 am
(5) 7:15 am

 

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Neelam rides her bicycle from her house at A to her club at C, via B taking the shortest path. Then the number of possible shortest paths that she can choose is

(1) 1170
(2) 630
(3) 792
(4) 1200
(5) 936

 

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Write a program to swap two numbers without using a temporary variable.

 

C program mostly asked in interviews

 

#include<stdio.h>
int main(){
int a, b;
printf("Enter values of a and b: \n");
scanf("%d %d",&a,&b);
printf("Be fore swapping a=%d, b=%d\n", a,b);
a = a + b;     
b = a - b;
a = a - b;
printf("Af ter swapping a=%d b=%d\n", a, b);
return 0;
}

Output:
Enter values of a and b: 2 3
Before swapping a=2, b=3
The values after swapping are a=3 b=2

 

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Analog electronics company placement written test questions

  1. If A.B = 0, prove that A xor B = A or B
  2. CMOS inverter with P and N devices interchanged. Draw the o/p waveform for square wave i/p with Vtn =Vtp = 1 V. Vdd = 5V.
  3. Given a logic function. Realize with static CMOS. Do sizing for equal worst case rise and fall time. Given un = 2up.
  4. FIFO : sender => 200Megasamples/sec. Receiver => 10 Megasamples/sec. Sender sends a burst of 10usec in every 1 sec. Find the depth of FIFO.
  5. A simple ques on karnaugh map simplification.
  6. A question on optical sensors: A and B are placed at 90degrees around the optical disk that is painted black on 40% of its area. Design a logic to detect the direction of rotation. (Ans: Give A to clk & B to input or vice versa of D FF)
  7. A question on 3 flip-flops cascaded..2 & 3 f/f have closk skew..draw output waveforms..hold time =0 .One case was when Tcq was less than clock skew & when it is greater
  8. Simple booelan function to be implemented using ex-or , nand , nor gates.
  9. Given sheet resistance of metal, and some metal later layout( dimensions were given ), metal contact……find the power dissipation

Analog electronics pdf, company placement papers, interview questions, analog jobs in banglore

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Wednesday, 25 March 2015

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DRDO 2015 recruitment of scientist-b

DRDO invites application from young and dynamic engineering graduates for the post of Scientist -B

Post date:25-03-2015

Last date: 10 -03-2015

Qualification: At least First Class Bachelor's Degree in Engineering or Technology in Electronics & Communication Engg. only, from a recognized university or equivalent.

How to apply: interested candidates should apply online before 10-04-2015

Click here for more details
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The binary equivalent of 9.37510 is

a. 1001.0112
b. 1101.1012
c. 100.0112
d. 1111.0012

Note: Post your answers with Option name and Discuss the reason of your answer so that others can able to understand and if you want to receive answers from other candidates, click notify me below the comment form.

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ECE objective questions, online questions,free mock exams,analog electronics,digital electronics objective questions

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When a large number of analog signals is to be converted to digital form, an analog multiplex or is used. The A to D converter suitable in this case will be

a. dual slope type
b. up down counter type
c. Successive approximation type-answer
d. forward counter type

Note: Post your answers with Option name and Discuss the reason of your answer so that others can able to understand and if you want to receive answers from other candidates, click notify me below the comment form.

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ECE objective questions, online questions,free mock exams,analog electronics

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Monday, 23 March 2015

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Given an AM radio signal with a bandwidth of 10 KHz and the highest-frequency component at 705 KHz, what is the frequency of the carrier signal?

Capture_thumb[2]A) 700 KHz-Answer
B) 705 KHz
C) 710 KHz
D) Cannot be determined from given information

 

Note: Post your answers with Option name and Discuss the reason of your answer so that others can able to understand and if you want to receive answers from other candidates, click notify me below the comment form.

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AM and FM are examples of ________ conversion.

Capture_thumb[2]A) digital-to-digital
B) digital-to-analog
C) analog-to-analog-Answer
D) analog-to-digital

Note: Post your answers with Option name and Discuss the reason of your answer so that others can able to understand and if you want to receive answers from other candidates, click notify me below the comment form.

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Hal previous papers,electronics objective questions,communication systems

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Saturday, 21 March 2015

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Indian coast guard 2015 recruitment of Assistant commandant

Indian coast guard invites application from young and dynamic engineering graduates for the post of Assistant commandant

Post date:21-03-2015

Last date: 26-03-2015

Qualification: Should hold a Bachelors degree of recognised university with minimum 60% marks in aggregate. Mathematics and Physics as subject up to intermediate or class XII of 10+2+3 scheme of education with 60% aggregate marks of both subjects.

How to apply: interested candidates should apply online before 26-03-2015

Click here for more details
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