ISRO ME 2019 Mini Mock 1 for ESE & GATE ME Exams

Question 1

A company intends to use exponential smoothing technique for making a forecast for one of its products. The previous year’s forecast has been 78 units and the actual demand for the corresponding period turned out to be 74 units. If the value of the smoothing constant α is 0.2, the forecast for the next period will be

Question 2

The operation in which oil is permeated into the pores of a powder metallurgy product is known as ______.

Question 3

During a polytropic process, the heat rejected is given by

Question 4

Which of the following is not related with the ideal fluid properties ________?

Question 5

Two walls of same thickness and cross-sectional area have thermal, conductivities in the ration 1:2. If the ratio of temperature drop across the two walls is 2:3, what is the ratio of heat flow ________?

Question 6

Match the following

Question 7

For the following activity, determine the independent float.

Question 8

Which of the following is a false statement about work hardening?

Question 9

Two finite heat source (identical) are present at temperatures 1600 K and 400 K respectively. If the maximum work output is required by having an reversible engine in between them. Then what is the final temperature of both the sources?

Question 10

A vertical rectangular wall with a width of 20 m and a height of 12 m is holding a 7 m deep water body. Determine the total pressure force on the wall(in kN)______.

Question 11

In natural convection heat transfer, Nusselt number is a function of:

Question 12

In electrochemical machining process which uses the principle of electrolysis for machining operation is used for having intricate design in various industries. It works on which of the following law.

Question 13

On P-T diagram, triple point is a _______.

Question 14

For long column of length L, what will be the ratio of

. Where, P₁ = Euler’s buckling load, when both ends are hinged and P₂ = Euler’s buckling load, when both ends are fixed.

Question 15

A periodic function f(x) with period

is defined as follows :

The value of a₀ in the fourier series expansion of f(x) is :

Question 16

Force F acts on the key to avoid rotating, as a couple. If radius of shaft is r and torque produced is T, shear stress induced in the key is given by ______. Dimensions of the key are as length is L, width is b.

Question 17

If first and last gear having teeth 40 and 50 respectively of a simple gear train, what will be the train value and speed ratio respectively if first gear is driving gear

Question 18

Which one of the following is an eigen vector of the matrix:-

A =