BARC 2021 ME: Full Syllabus Test 8 for ESE & GATE ME Exams

Question 1

Match List-I (type of gear failure) with List-II (Reasons) select the correct answer using the code given below the lists:
List-I
A). Scoring
B). Pitting
C). Scuffing
D). Plastic flow
List-II
1). Oil film breakage
2). Yielding of surface under heavy loads
3). Cyclic loads causing high surfaces stress
4). Insufficient lubrication

Question 2

A cylinder of diameter 100 mm and height 50 mm is melted and casted into a sphere of uniform density. If the melting time takes 1 min, diameter of sprue base is 5 mm and height of pouring basin is 20 mm, solidification for conversion of factor is 0.97 × 10⁶ s/m², the total time for conversion of solid cylinder to solid sphere will be ____ s.
[Neglect any time losses]

Question 3

If the equivalent load in case of radial ball bearing is 500 N and the basic dynamic load rating is 62500 N, then

life of this bearing is

Question 4

The figure below shows a steel rod of 25 mm2 cross sectional area. It is loaded at four points, K, L, M and N. Assume E_steel =200GPa.The total change in length of the rod due to loading is
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Question 5

Water flows through a 10 mm diameter and 250 m long smooth pipe at an average velocity of 0.1 m/s. The density and the viscosity of water are 997 kg/m³ and 855 x 10^-6Ns/m² respectively. Assuming fully-developed flow, the pressure drop (in Pa) in the pipe is _______.

Question 6

The cause of viscosity in liquid is ________.

Question 7

Mohr’s circle for the state of stress defined by

MPa is a circle with

Question 8

A 2-D flow field is defined as $Description: Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\07_Fluid-Mechanics_BLok_files\image012.png$ . The equation of steamline passing through the point (1,1) is

Question 9

The project activities, precedence relationships and durations are described in the table. The critical path of the project is
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Question 10

The integrating factor for the differential equation,

is

Question 11

GO and NO-GO plug gauges are to be designed for a hole mm. Gauge tolerances can be taken as 10% of the hole tolerance. The sizes of GO and NO-GO gauge will be respectively(On the basis of workshop gauge)______.

Question 12

Under logarithmic decrement, the amplitude of successive vibrations are

Question 13

A simple spring-mass vibrating system has a natural frequency of N. If the spring stiffness is halved and the mass is doubled, then the natural frequency will become

Question 14

The shell of a boiler is 2 m in diameter and the plates are 2 cm thick. By how much % the working pressure will be reduced if the efficiency of the joint is 80% as compared to 100% efficiency
[Assume safe working stress for the shell plates as 70 MPa]

Question 15

Given

, what will be the evaluation of the definite integral