GATE 2021 ME : Toppers Quiz 10 (App update required to attempt this test) for ESE & GATE ME Exams

Question 1

The work done by a body in moving down a smooth inclined plane in comparison to being dropped vertically downwards from same height will be

Question 2

0.1 kg block is resting on a surface with the coefficient of friction=0.35, a force of 1 N is applied on the block, the friction force will be?

Question 3

Steel whose elements are used for the purpose of modifying the mechanical properties of plain carbon steel is called ___________.

Question 4

In steel, main alloy causing corrosion resistance is ________.

Question 5

A 13 m ladder is placed against a smooth vertical wall with its lower end 5 m from the wall. What should be the coefficient of friction between the ladder and floor so that it remains in equilibrium?

Question 6

A block made of perfectly plastic material with a yield stress of 260 MPa in simple tension has the diameter 200 mm × 100 mm × 150 mm (b × h × w) at one instant during plane strain forging. Assuming there is sticking friction, the peak pressure will be

Question 7

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 8

A bolted joint has four bolts arranged as shown in figure. The cross sectional area of each bolt is 25 mm². A torque T = 200 N-m is acting on the joint. Neglecting friction due to clamping force, maximum shear stress in a bolt is_____ MPa.

Question 9

Just-In-Time production is also known as _______.

Question 10

Match list-I with List-II and select the correct answer using the codes given below the list:

List –I

(Material properties)

A) Ductility

B) Toughness

C) Endurance limit

D) Resistance to penetration

List-II

(Test to determine properties)

1) Impact test

2) Fatigue test

3) Tension test

4) Hardness test

Question 11

Air flows over a 10 m long plate. The transition from laminar to turbulent flow takes place between Reynolds number of 2.5 × 10⁶and 3.6 × 10⁶. What is the maximum distance from the front edge of the plate along which one can expect laminar flow in the boundary layer? The free stream velocity is 30 m/s and kinematic viscosity (ν)= 1.5 ×10^-5 m²/s.

Question 12

For an ideal gas, the slope of the constant volume line is _______ than that of constant pressure line on the T-s diagram.

Question 13

Gun metal consists of

Question 14

In a psychrometric chart, relative humidity lines are:

Question 15

The vibration analysis of a physical system may be summarized by