RRB JE Mechanical Question Paper 2014 (Set-3) with Answer Key

36) The eleventh part of 990x(990/990) is

Answer is:

90

Explanation:

The eleventh part of 990 * 990 / 990 is 90.
Solution:
Eleventh part mean 1/11.
990 * 990/990 = 990
Eleventh part of 990 = 1/11 * 990
= 90
Hence, the eleventh part of 990 * 990/990 is 90.

37) The maximum strength of Lok Sabha is

Answer is:

552

38) A car covers three successive 4 km distances at speed of 10 kmph, 20 kmph and 60 kmph respectively. Its average speed over total distance is

Answer is:

18 kmph

Explanation:

Time taken to travel first 4 km = distance/speed =4/10= 0.4 hr
Time taken to travel next 4 km = 4/20= 0.2 hr
Time taken to travel next 4 km = 4/60 = 0.067 hr
Average speed = total distance traveled/ total time taken to travel that distance
= 12/ 0.667 = 17.991 kmph or 18 kmph

39) A car can finish a certain journey in 10 hours at a speed of 48 km/hr. In order to cover the same distance in 8 hours, the speed of the car must be increased by

Answer is:

12 km/hr

Explanation:

With speed of 48km/hr n time 10hrs
Distance covered = 48×10=480km
person wants to cover the distance in 8 hrs
using formula
speed=distance/time= 480/8= 60km/hrs
so speed of the car should be increase by 60-48=12km/hrs in order to cover distance in 8 hrs.

40) Which of the following is not a DBMS software?

Answer is:

COBOL

Explanation:

COBOL stands for Common Business Oriented Language. It is imperative, procedural, and object-oriented. A compiler is a computer program that takes other computer programs written in a high-level (source) language and coverts them into another program, machine code, which the computer can understand.