GATE ME 2019: Topper's Quiz-17 for ESE & GATE ME Exams

Question 1

Given the atomic weight of Fe is 56 and that of C is 12, the weight percentage of carbon in cementite (Fe₃C) is ________

Question 2

The ‘Crowning’ of the flat pulley is generally done:

Question 3

Match the following properties to their corresponding units

A) 1-b, 2-a, 3-d, 4-c B) 1-d, 2-c, 3-b, 4-a

C) 1-d, 2-b, 3-c, 4-a D) 1-b, 2-d, 3-a, 4-c

Question 4

If the temperatures at the inlet of a hot and cold fluid are 150℃and 30℃ and outlet are 90℃and 60℃, then the type of heat exchanger that would have lowest LMTD is;

Question 5

Five jobs are to be schedule according to SPT rule. Find the mean flow time.

Question 6

A friction circle is drawn when the journal rotates in bearing. Its radius depends on the coefficient of friction and

Question 7

Two optically flat plates of glass are kept at a small angle θ as shown in the figure. Monochromatic light is incident vertically.

If the wavelength of light used to get a fringe spacing of 1 mm is 450 nm, the wavelength of light (in nm) to get a fringe spacing of 1.5 mm is____

Question 8

Using the Taylor's tool life equation with exponent n = 0.5, if the cutting speed is reduced by 50% the ratio of new tool life to original tool life is ________.

Question 9

A cross-section symmetric I section loaded with transverse force is shown in the diagram. Shearing stress at location Q is 2.5 times of shearing stress at P then what is the value of s? [h = 1.5 m, b = 0.25 m and t is very small]

Question 10

For a mechanism having 6 link and 6 joint and having 2 higher pair. Consider that neither the mechanism have any redundant motion nor redundant link are there. Find the degree of freedom of the mechanism

Question 11

Observe the following figure, a portion of gear teeth.The backlash for the gear in mm will be
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Question 12

The resistance of a copper wire is found to be 15ohms at the ice point, 18.986 ohms at the steam point and 32.683 ohms at sulphur point. Find the constants (Y +10⁵ Z) 10⁶ in the given equation.

X= X₀(1+ YT+ZT²) where X is resistance in ohms, T is temperature in °C

Question 13

A carnot engine with 50 percent thermal efficiency is used to drive a carnot refrigerator having a coefficient of performance of 5. The energy absorbed by the engine for each kJ energy absorbed from the cold body by the refrigerator is _________kJ.

Question 14

For the overhanging beam shown in figure, the magnitude or maximum bending moment (in kN-m) is________

Question 15

For spot welding of two steel sheets (base metal) each of 3 mm thickness, welding current of 10000 A is applied for 0.2 s. The heat dissipated to the base metal is 1000 J. Assuming that the heat required for melting 1 mm³ volume of steel is 20 J and interfacial contact resistance between sheets is 0.0002Ω, the volume (in mm³) of weld nugget is _________.

Question 16

For ball bearings, the fatigue life L measured in number of revolutions and the radial load F are related by

, where K is a constant. It withstands a radial load or 2 kN for a life of 540 million revolutions. The load (in kN) for a life of one million revolutions is _______

Question 17

Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I (Problem area)
A- Jit
B- Computer assisted layout
C- Scheduling
D- Simulation
List-II (Technicians)
1- CRAFT
2- SYNTEX
3- Johnson’s rule
4- Kanbans
5- Monte Carl

Question 18

One side of a wall is maintained at 400 K and the other at 300 K. The rate of heat transfer through the wall is 1000 W and the surrounding temperature is 25 °C. Assuming no generation of heat within the wall, the irreversibility (in W) due to heat transfer through the wall is______

Question 19

Water flows through a pipe of diameter 20cm and length 50m when one end of the pipe is connected to a tank and other end of the pipe is open to the atmosphere. The pipe is horizontal and the height of water in the tank is 4m above the center of the pipe. Considering all minor losses determine the total energy at the inlet of the pipe. Take f= 0.036.

Question 20

A ball of mass 0.1 kg, initially at rest, is dropped from height of 1m. Ball hits the ground and bounces off the ground. Upon impact with the ground, the velocity reduces by 20%. The height (in m) to which the ball will rise is ___________