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ISRO Mechanical Exam 2017: Weekly Toppers Quiz 1

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Question 1

Aluminium crystal structure is

Question 2

Two particles with masses in the ratio 1:4 are moving with equal kinetic energies. The magnitude of their linear momentums will conform to the ratio

Question 3

A liquid compressed in cylinder has a volume of 0.04 m³ at 50 kg/cm² and a volume of 0.039 m³ at 150 kg/cm². The bulk modulus of liquid is

Question 4

In descending order of magnitude, the thermal conductivity of (a) pure iron, (b) liquid water, (c) saturated water vapour and (d) aluminum can be arranged as

Question 5

The process layout is best suited where

Question 6

The blank size of the gear of 3 mm module and 40 number of teeth is

Question 7

In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become _____.

Question 8

A bar of bronze and a bar of steel are placed between two immovable supports. A and B as shown in the figure. The physical constants are : (where L = Length of bars, A = cross-sectional area,

= linear coefficient of thermal expansion, E = Young’s modulus)

The stresses in the steel and bronze, when temperature drops by 50 °C is

Question 9

A stone of mass m at the end of a string of length l is whirled in a vertical circle at a constant speed. The tension in the string will be maximum when the stone is

Question 10

A system undergoes a state change form 1 to 2. According the second law of thermodynamics for the process to be feasible, the entropy change, S₂-S₁ of the system

Question 11

Following is a process used to form powder metal to shape

Question 12

Circulation is defined as the line intergral of tangential component of velocity about a ___________.

Question 13

The efficiency of Carnot engine is given as 80 %. If the cycle direction is reversed, what will be the value of COP of reversed Carnot cycle _________?

Question 14

The matrix A = is

Question 15

A solid steel shaft transmits 40 kW of power at a speed of (75/π) Hz. The initial torque needed in the shaft is __________.

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ESE & GATE ME General

Jul 1ESE & GATE ME