RRB JE ECE (CBT I) Mock Test- 5 - Electronics and Communication Engineering (ECE) MCQ

A horse takes 2(½) seconds to complete a round around a circular field. If the speed of the horse was 66 m/s, then the radius of the field is: [Given π = 22/7 ]

In a mixture of 60 litres, the ratio of milk and water is 2 : 1. What amount of water must be added to make the ratio of milk and water as 1 : 2?

Heena and meena start walking from a fixed point in the opposite direction at an average speed of 2 Kmph. and 4 Kmph. respectively. How many Km. Will they be apart from each other in 5 hours?

A man can row 15 kmph in still water and he finds that it takes him twice as much time to row up than to row down the same distance in the river. The speed of the current is :

For what value of m, the system of equations mx + 2y =2 and 3x + y = 1 will be coincident?

If the numerator of a fraction is increased by 200% and the denominator is increased by 350%, the resultant fraction is 512 . What was the original fraction?

if x+y = 25 and x²y³ +y²x³ =25, what is the value of xy?

The angle of elevation of the top of a tower at a point on the ground is 30^o. On walking 16 meters towards the tower, the angle of elevation becomes 60^o. Find the height of the tower.

Mohan purchased a bike for Rs 800/- including sales tax of 20%. Find the actual price of the bike?

If 5 girls can embroider a dress in 9 days, then the number of days taken by 3 girls will be _____.

If p = cosec θ + cot θ, then the value of p + 1/p =

One man or two women or three boys can do a piece of work in 88 days. One man, one woman and one boy will do it in _____.

We have to divide a sum of Rs.13,950 among three persons A, B and C. B must get the double of A’s share and C must get Rs.50 less than the double of B’s share. The share of A will be:

Find the measure of an angle which is a complement of itself.

sin6A+cos6A is equal to:

The sum of the internal angles of a regular polygon is 1440°. The number of sides is:

The difference in selling price of a radio at gains of 10% and 15% is Rs.30. Find the price of the radio?

△ABC is a right angled at A and AD is the altitude to BC. If AB= 7cm and AC= 24cm. Find the ratio of AD is to AM if M is the midpoint of BC:

DIRECTION: Study the table carefully to answer the questions that follow.

What was the respective ratio between the number of items of type-2 produced by Company M in the month of May and the number of items of type-1 produced by Company-L in the month of March?

A car travels 120 km from A to B at 30 kmph. but returns the same distance at 20 kmph. The average speed for the round tip is closest to:

If the average weight of 6 students is 50 kg, the average weight of 2 students is 57 kg, and the average weight of 2 students is 55 kg, then the average weight of all students is?

In what time period Rs.100, 000,000 will amount to Rs.104,060,401 at 2% per annum at compound interest, interest being compounded half yearly?

ABC is a right-angled triangle, right angled at B. The external bisector of ∠A meets CB produced at D. If AC = 25 cm, BC = 7 cm, find the length, of CD.

DIRECTION: Study the table carefully to answer the questions that follow.

What was the average number of items of type-2 produced by all the companies together in the month of January?

A sum of Rs. 210 was taken as a loan. This is to be paid back in two equal installments. If the rate of interest be 10% compounded annually, then the value of each installment is

A child reshapes a cone made up of clay of height 24 cm and radius 6 cm into a sphere. The radius (in cm) of the sphere is

If θ lies in the second quadrant, then is equal to: