Practice Test: Electronics Engineering (ECE)- 11 - Electronics and Communication Engineering (ECE) MCQ

Since the middle term 'cakes' is not distributed even once in the premises, no definite conclusion follows. However, I and II involve only the extreme terms and form a complementary pair. So, either I or II follows.

Man does not live by bread alone.

Extraneous – irrelevant or unrelated to the subject being dealt with

As a blind person cannot see light and a Dumb person cannot speak. So option (a) is the correct answer.

log a/b + logb/a = log ( a + b)

log ( a/b * b/a ) = log ( a + b )

log 1 = log ( a + b)

So, a + b = 1 .

a = 1 - b

b = 1 - a.

Therefore, If log a/b + log b/a = log (a + b), then a+ b = 1

Let number of candidates be n
50 × n – 100 × 30 = 45 × n
n = 600

Number of cubes with 3 faces red = 8
Number of cubes with 2 faces red = 24
Number of cubes with 1 face red = 24
Number of cubes with no face red = 64-(24+24+8) = 8

This clearly the best answer because the paragraph directly states that warm weather affects consumers inclination to spend. It furthers states that the sales of single-family homes was at an all-time high. There is no support for choice a or c. Choice b is wrong because even though there were high sales for a particular February, this does not mean that sales are not higher in other months. Choice d presents a misleading figure of 4 million. The paragraph states that the record of 4.75 million was at an annual, not a monthly, rate.

Let Amit’s age be n years
Age of his father = (4n + n) = 5n years
After 8 years:
Amit’s age = n + 8
Father’s age =
3(n + 8) = 5n + 8
3n + 24 = 5n + 8
16 = 2n
n = 8 years
After further 8 years:
Amit’s age = 24 years
Father’s age = 5n +16 = 56 years
So father is 2.33 times older than Amit.

• A is kept open for all t minutes and fills one-third the tank. Or, A should be able to fill the entire tank in '3t' minutes.
• A and B together can fill the tank completely in t minutes. A alone can fill it in 3t minutes.
• A and B together can fill 1t of the tank in a minute. A alone can fill 13t of the tank in a minute. So, in a minute, B can fill 1t−13t=23t. Or, B takes 3t2 minutes to fill an entire tank.
• To fill one-third the tank, B will take t2 minutes. B is kept open for t - 10 minutes.
  t2 = t - 10, t = 20 minutes.
• A takes 60 minutes to fill the entire tank, B takes 30 minutes to fill the entire tank. A is kept open for all 20 minutes. B is kept open for 10 minutes.
• C, which is kept open for 8 minutes also fills one-third the tank. Or, c alone can fill the tank in 24 minutes. Choice (D) is the correct answer.

For finding the Thevenin’s equivalent resistance, 8 A current source will be open circuited while V volt voltage source will be short circuited.

Hence 

Period N= K
=5K
= 5 {K = 1}

A gate function is a rectangular function defined as

Where τ is pulse width.

  = 
  =  3.2 KHz

Noise figure = 1 +
Where, is the equivalent receiver noise resistance & is the resistance of antenna So, F = 1+ =2

Comparing with the standard phase lead compensating network


= 50 rad /sec

Comparing the above transfer function with the standard second order transfer function

For far field approximation,

Velocity of propagation is given by 

Radiation resistance of antenna,

Electric current is nothing but flow of charge. Similarly in fluid system flow of water is comparable with electric current.

Let the transistor be operating under active region.

Voltage - Regulation,

Total power drawn from the circuit = 2 x 100 = 200 W 

Hence, supply current is:

Let R be the series resistance to be inserted in the circuit such that the voltage across the bulbs is 220 V.

Applying KVL, we get:

Auguemented matrix,


Since rank of matrix A as well as auguemented matrix is 2, therefore it has unique solution.

Since both the poles lie outside the unit circle therefore according to Cauchey – Integral,
the integration is zero.