Time Left - 20:00 mins

GATE ME 2019: Topper's Quiz-14 (App update required to attempt this test)

Attempt now to get your rank among 942 students!

Question 1

An engineering material property is defined as “the capacity of retaining the deformation produced with the application of load permanently”. The property described is ______.

Question 2

A particle motion on a space curve is governed by $Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\10-RAC-Engg-Mechanics_BLok1_files\image005.png$ $Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\10-RAC-Engg-Mechanics_BLok1_files\image006.png$ and $Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\10-RAC-Engg-Mechanics_BLok1_files\image007.png$ . The speed of the particle any instant will be? ( $Description: E:\Gate\SSC JE Mechanical Part 1\Made Easy Questions\10-RAC-Engg-Mechanics_BLok1_files\image008.png$ is time)

Question 3

Match the following

Question 4

The two surfaces of a glass window are maintained at temperature of 45℃ and 28℃. The inner and outer heat transfer coefficient are 10W/

K and 25W/

K. If the thermal conductivity of the glass window having area and thickness of 2.4

and 0.006m is 0.85W/mK, find the rate of heat loss through the window.

Question 5

A company is engaged in manufacture of two products P and Q, performs only three operations – A,B and C. The relevant data is given below

The formulation of problem for weekly production so as to maximize its revenue

Question 6

For a canteen, the actual demand for disposable cups was 500 units in January and 600 units in February. The forecast for the month of January was 400 units. The forecast for the month of March considering smoothing coefficient as 0.75 is _________

Question 7

Air in a room is at 35 °C and 60% relative humidity (RH) The pressure in the room is 0.1 MPa The saturation pressure of water at 35 °C is 5.63 kPa. The humidity ratio of the air (in grain/kg of dry air) is ________.

Question 8

A simple impulse turbine expands steam frictionlessly from 12 bar, 250 °C with an enthalpy of 2935 kJ/kg to an enthalpy of 2584 kJ/kg at 0.1 bar. Assuming that the nozzle makes an angle of 20 ° with the blade motion, and that the blades are symmetrical, find the blade velocity(in m/sec) that produces maximum efficiency for a turbine speed of 3600 rev/min. assume that the steam enters the nozzle with negligible velocity.

Question 9

For a vibration system, equation of motion is given as

The value of frequency of damped vibration is __________ (in rad/s).

Question 10

Two Copper rods of different cross sectional area are placed co axially as shown in figure

If length of each rod is 500 mm, and areas are 200mm² and 100mm².
The displacement of junction, when temperature decreases by 100℃, will be
(E_Cu=130GPa, α_Cu=20×10^-6/℃)

Question 11

In the above problem, the coefficient of friction at the chip tool interface obtained using Earnest and Merchant theory is

Question 12

A spherical body having (k₁=25W/m-k, radius 20 cm) is covered with an insulation material having k₂=2.6 W/m-k. Find the thickness of insulation such that the heat transfer through this composite system is maximum. Ambient air condition is such that heat transfer coefficient is 20 W/m²K.

Question 13

Water

at 80 °C enters a counterflow heat exchanger with a mass flow rate or 0.5 kg/s. Air

enters at 30 °Cwith a mass flow rate of 2.09 kg/s. If the effectiveness of the heat exchanger is 0.8, the LMTD (in °C) is

Question 14

A fluid has an absolute viscosity of 0.05 Pa s and a specific gravity of 0.68. When such a fluid flows over a flat plate, the velocity at a point 75 mm from the surface is 1.25m/s. Assuming parabolic velocity distribution with the vertex at the above said point, the shear stress (in N/m²) at 50 mm from the boundary surface will be

Question 15

A Diesel engine develops a Brake power of 4.5 kW. Its indicated thermal efficiency is 30% and the mechanical efficiency is 85%. Take the calorific value of the fuel as 40000 kJ/kg and calculate.

The fuel consumption in kg/h

942 attempts
3 upvotes
6 comments

Tags :

ESE & GATE ME General

Apr 28ESE & GATE ME