Q: How much estimated amount of power can be derived from solid energy mineral of 1 kg of coal?
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45 previous year questions
Q: How much estimated amount of power can be derived from solid energy mineral of 1 kg of coal?
Q: Which one of the following types of coal has high calorific value and lowest volatile content?
Q: In which one of the following layers, the firewalls can be installed to keep good packets and bad packets out?
Q: What is the value of ∫ (from x = 0 to a) ∫ (from y = 0 to √(a² − y²)) y² √(x² + y²) dy dx by changing into polar coordinates?
Q: According to Environmental Accounting on forest 2025 report, which state showed the highest rise in Recorded Forest Area (RFA) share?
Q: Consider the following equation: R = a(1 – cos θ) The volume of the solid generated by the revolution of the cardioid about the initial line will be
Q: The Mechanical Engineering designer’s problem is to attempt to minimize the factors that affect the fatigue life; these are 1. Electrolyte concentration 2. Temperature 3. Fluid flow rate around specimen
Q: Which of the following are the noise factors for the experiment on the ‘Elastomeric Connector’? 1. Conditioning time 2. Interference 3. Conditioning temperature 4. Connector wall thickness
Q: The correct sequence of the components of biological diversity or biodiversity in the hierarchy of ecosystem is
Q: A mass movement in which material moves along a curved surface of rupture (slow or moderately rapid movement of a coherent body of rock) is called
Q: Consider the following data: Atomic radius of copper = 1·278 Å, A_W = 63·54, N_c = 4, N_A = 6·023 × 10²³ The density of the copper will be nearly
Q: For many alloy systems at specific temperature, a maximum concentration of solute atoms that dissolve in the solvent to form a solid solution is
Q: The long chain molecules are randomly oriented in
Q: Let the random variables X and Y have joint density function given by f_{X,Y}(x,y) = { C(1 − y), 0 ≤ x ≤ y ≤ 1 { 0, otherwise Then the marginal density function for X is
Q: The following map shows the 10 bridges and 3 islands between the suburbs of North Bay and South Bay. During your morning workout, you decide to jog over each bridge exactly once. Which one of the following statements is correct?
Q: Which one of the following protocols is used to wrap IP packets with the additional feature of multiplexing and de-multiplexing multiple processes using a single IP address?
Q: Consider the following statements regarding effect of minor elements on steel properties: 1. Sulphur is present in steel either as iron sulphide or manganese sulphide and during the rolling or forging of steel, iron sulphide present in steel gets cracked/teared. 2. Silicon, in the form of ferrosilicon, is used widely as a deoxidant due to its low cost and high efficiency. 3. Silicon opposes the presence of iron oxide (FeO) which is very much detrimental to properties of steel. Which of the above statements are correct?
Q: Which one of the following statements is NOT correct regarding thermal mass?
Q: Consider the following statements about ethanol: 1. Ethanol is primarily produced from corn and sugarcane. 2. Ethanol provides a major part of the liquid fuel requirement in Brazil. 3. The production of ethanol accounts for around 90% of the production of biofuels in the world. Which of the above statements is/are correct?
Q: Which one of the following statements is NOT correct regarding carbon dioxide?
Q: What is Chaparral?
Q: The British economist Nicholas Stern gave the most impressive analysis in the year 2006 on
Q: Surface rocks on Earth are cool, but below the surface the temperature increases with depth. This is called
Q: Which one of the following is NOT correct?
Q: The diffusion coefficient for copper in aluminium at 500°C and 600°C are 4.8 × 10⁻¹⁴ m²/s and 5.3 × 10⁻¹³ m²/s respectively. What is the approximate time at 500°C that will produce the same diffusion result (in terms of concentration of copper at some specific point in aluminium) as 10 h heat treatment at 600°C?
Q: A piece of copper originally 305 mm long is pulled in tension with a stress of 276 MPa. If the deformation is entirely elastic, what is the resultant elongation approximately?
Q: What is the approximate value of ductility (%EL) of a cylindrical copper rod if it is cold worked such that the diameter is reduced from 15·2 mm to 12·2 mm? (Take the tensile strength from the curve for copper as 340 MPa)
Q: The density of α-Fe is 7.87 × 10³ kg/m³. Atomic weight of Fe is 55.8. If α-Fe crystallises in BCC space lattice, what is the lattice constant approximately? (Take Avogadro’s number (N) = 6.02 × 10²⁶/kg·mole and number of atoms per unit cell is 2)
Q: Consider the following statements for the multi-state characterization (infinite number of states) with K = ∞: 1. X(t) is non-decreasing. 2. X(t) is continuous-time stochastic process. 3. Higher value of X(t) implies greater degradation and the item failure time. Which of the above statements are correct?
Q: Consider the following statements regarding the design for six-sigma: 1. The concept of six-sigma originated at Motorola. 2. The goal is to arrive at 3·4 defects per million opportunities. 3. Sigma is used to compare expected outcomes versus failures in a population. Which of the above statements are correct?
Q: Consider the following economic activities: 1. Public administration 2. Financial services 3. Mining and quarrying Which of the above economic activities fall under the tertiary sector?
Q: Consider the following statements: 1. Ford India will stop manufacturing vehicles in India but will retain the engine-making and technology services business as part of restructuring its India operations. 2. Zee Entertainment Enterprises Ltd announces a merger with Sony Pictures Networks India. 3. Yashoda Hegde is the new CEO of Coffee Day Enterprises Ltd. Which of the above statements is/are correct?
Q: Kyoto Protocol operationalizes the UN framework convention on
Q: Which one of the following layers in the OSI reference model is concerned with transmission of unstructured bit stream over physical medium; deals with the mechanical, electrical, functional, and procedural characteristics to access the physical medium?
Q: Which one of the following is a ‘soft coal’?
Q: The purpose of oil in a transformer is to
Q: Which one of the following is the disadvantage of ion-implantation over diffusion doping ?
Q: The population of a village is 5500. If the number of males increases by 11 % and the number of females increases by 20 % then the population becomes 6330. The population of female in the village is
Q: Which one of the following regions is characterized by sensitive ecosystems, enhanced occurrences of extreme weather events and natural catastrophes?
Q: Which of the following practices are adopted for river basin water resources management? 1. Soil conservation in catchments of river valley projects and flood-prone rivers 2. Soil and land use surveys 3. Control of shifting cultivation 4. Deforestation
Q: According to Stokes' law, the rate of settling of the particles depends on the terminal settling velocity vt which is where dp = Particle diameter ρp = Density of particle ρa = Density of air μa = Velocity of air P = Air pressure C = Constant
Q: Which of the following are the suggested ways of reducing NOx emissions from stationary sources? 1. By reducing the peak temperature 2. By increasing the availability of N2 for reaction with O2 3. By minimizing the availability of O2 for reaction with N2
Q: Which of the following are the characteristics of covalent compounds? 1. They are mostly gases and liquids. 2. They are usually electric insulators. 3. They are directional in nature. 4. They are insoluble in polar solvents like water but are soluble in non-polar solvents.
Q: Which of the following factors are affecting critical shear stresses? 1. Purity of metals reduces the critical shear stress 2. Surface films greatly enhance the critical shear stress 3. Rise in temperature 4. Rate of deformation and the extent of initial deformation also help in raising the critical shear stress
Q: Which one of the following types of materials is having high remanence, coercivity and saturation flux density as well as low permeability and high hysteresis energy losses?