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GATE 2019: Full Length Test-2 (App update required to attempt this test)

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Question 1

The crystal systems are specified by

Question 2

For iron said to be gray cast iron, the minimum percentage of carbon required is ___________.

Question 3

In the following question, there is a related pair of words in capital letters. Four pairs of words or phrases follow this capitalized pair. Select the pair that best expresses a relationship similar to the one expressed in the original pair.
IMPLICATE: INCRIMINATION

Question 4

The resultant of two forces can be defined as a force that

Question 5

A bar is subjected to forming process such that the final length is 4 times that of initial length.The true strain produced in the bar is

Question 6

The torque applied on the shaft is 1600 N-m. If the modulus of rigidity of the shaft is 80GPa then the value of torsional stiffness is

D=40mm d=20mm L=1m

Question 7

A car is moving on a level road at a speed 50 km/h. the coefficient of friction b/w the tyres and the road may be taken as 0.6. find the distance travelled by the car before coming to rest when brakes are applied to all four wheels?

Question 8

A steel rod 10 m long is at temperature of 20℃ and is heated to 60℃. What is the stress induced if the allowable expansion in the rod is 4mm. Young’s Modulus of steel is 200 GPa and coefficient of linear expansion is 12×10^-6/℃.

Question 9

Arc blow is a phenomenon in which the welding arc takes curve shape which result in weld spatter and other different welding problems. What type of current is used in arc blow.

Question 10

The uniaxial yield stress of a material is 300 MPa According to von Mises criterion, the shear yield stress (in MPa) or the material is ________.

Question 11

A water mains 140 cm inner diameter contains water at a pressure head of 200 m. The minimum thickness of the metal shell required for the water mains, given that maximum permissible stress in the metal is 400 kg/cm², will be ___ mm.

Question 12

A machine part of mass 2 kg vibrates in viscous medium, angular frequency at resonance condition is found to be 10π rad/s. If a harmonic exciting force of 25 N produces 1.25 cm. Find the stiffness of the system in N/m.

Question 13

A Carnot steam cycle operates between a source at temperature of 311.6 °C, pressure 10 MPa and sink temperature of 32.88 °C and pressure 5 kPa. Related table is given below

$Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\11_IC-Engine-PPMS_BLok1_files\image037.jpg$

Work ratio of the carnot cycle will be

Question 14

A journal bearing has journal diameter of 70 mm, and a length of 70 mm. If the rotational speed of journal is 1800 rpm, average viscosity of liquid lubricant is 0.04 Pa.s and difference in the radius of journal and bush bore is 0.04 mm then the torque loss will be ________ Nm.

Question 15

Steel bar ABC 16m long having cross-sectional area $Description: Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\04_SOM_BLok_files\image100.png$ weigth 40 N as shown in the figure. If the modulus of elasticity for the bar material is 200 GPa. The deflction at B is
$Description: Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\04_SOM_BLok_files\image101.png$

Question 16

Air enters an adiabatic nozzle at 20 bar and 50 °C with a velocity of 80 m/s and leaves with a velocity of 300 m/s. If the area ratio of the nozzle is 4 : 1. The exit pressure (in bar) of the air is
[Take C_p = 1.0 kJ/kgK for air]

Question 17

In a single server queuing system with arrival rate of ‘λ’ and mean service time of ‘μ’ the expected waiting time per customer in the system is

What is the expected number of customers in system?

Question 18

The sum of eight consecutive odd numbers is 656. The average of four consecutive even numbers is 87. What is the sum of the smallest odd number and second-largest even number?

Question 19

1 kg of air is heated from 305 to 595 K while pressure drops from 410 to 315 kPa. What will be the change in entropy? Assume: Constant specific heat, Variable specific heat.
Take: C_p0 = 1.004 kJ/kg K; s

= 6.8705 kJ/kg K; s

= 7.5802 kJ/kg K; R = 0.287

Question 20

The equation of motion for a spring-mass system excited by a harmonic force is

Where M is the mass, K is the spring stiffness, F is the force amplitude and ω is the angular frequency of excitation. Resonance occurs when ɷ is equal to.

Question 21

A disc clutch has a friction lining with coefficient of friction equal to 0.3 which is required to transmit 20 kW at 4000 rpm.
If outer radius of friction lining is 50 mm then the inner radius of friction lining is ___________ mm.
[Assume uniform contact pressure of 1.2 MPa]

Question 22

If $Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE ME 18-Mar\GATE-ME-2005_files\image085.png$ , and y(1)= 0, then what is y(e)?

Question 23

A domestic hot water tank (0.5 m diameter and 1 m high) is installed in a large space by the support of four small diameter rod. The ambient temperature is 25°C. If the tank surface is oxidized copper with an emissivity of 0.8 and is at a peak temperature of 80°C, the heat loss from the tank by radiation is

Question 24

The speed of the jet is 40m/s and it has a diameter of 30 cm. If the jet is made to strike a stationary curved smooth plate, the jet gets deflected by an angle of 60. What will be the velocity of jet at the exit of the plate. ______ .

Question 25

A double-pipe counter-flow heat exchanger transfers heat between two water streams. Tube side water at 19 liter/s is heated from 10 °C to 38 °C. Shell side water at 25 liter/s is entering at 46 °C. Assume constant properties of water; density is 1000 kg/m³ and specific heat is 4186 J/kg.K. The LMTD (in °C) is __________

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