Question No. 1 Define pitch. Answer: Pitch of the spring is defined as the axial distance between the adjacent coils in uncompressed state. Mathematically Pitch=free length/n-1 Question No. 2 What are the points to be taken into consideration while selecting the pitch of the spring? Answer: The points taken into consideration of selecting the pitch…
Question No. 1 What are the end conditions of spring? Answer: 1. Plain end. 2. Plain and ground end 3. Squared end 4. Squared and ground end. Question No. 2 What is buckling of springs? Answer: The helical compression spring behaves like a column and buckles at a comparative small load when the length of the spring is more…
Question No. 1 What is a spring? Answer: A spring is an elastic member, which deflects, or distorts under the action of load and regains its original shape after the load is removed. Question No. 2 State any two functions of springs. Answer: 1. To measure forces in spring balance, meters and engine indicators. 2. To store…
Question No. 1 What is a journal bearing? Answer: A journal bearing is a sliding contact bearing which gives lateral support to the rotating shaft. Question No. 2 What are the types of journal bearings depending upon the nature of contact? Answer: The types of journal bearings are 1. Full journal bearing 2. Partial bearing 1. Fitted bearing….
Question No. 1 What are the types of welded joints? Answer: The types of welded joints are 1. Butt joint 2. Lap joint 3. T – joint 4. Corner joint 5. Edge joint. Question No. 2 What are the two types of stresses are induced in eccentric loading of loaded joint? Answer: The two types of stresses are induced in…
Question No. 1 What factors influence the amount of initial tension? Answer: The factors influence the amounts of initial tension are 1. External load 2. Material used 3. Bolt diameter Question No. 2 What is bolt of uniform strength? Answer: A bolt of uniform strength has equal strength at the thread and shank portion. Question No. 3 What…
Question No. 1 Define the term critical speed. Answer: The speed, at which the shaft runs so that the additional deflection of the shaft from the axis of rotation becomes infinite, is known as critical or whirling speed. Question No. 2 Factors considered designing a shaft? Answer: Strength and Stiffness Question No. 3 What is…
Question No. 1 Explain the difference between AFBC, BFBC, PFBC and CFBC in regard to fluidized bed technologies. Answer: AFBC (Atmospheric fluidized bed combustion) process consists of forming a bed of inert materials like finely sized ash or ash mixed with sand, limestone (for sulfur removal), and solid fuel particles in a combustor and fluidising it…
Question No. 1 How the analyses and calorific values of fuels can be reported? Answer: It may be reported as: (A) As received or fired (wet) basis (B) Dry or moisture free basis (C) Combustible or ash and moisture free basis Question No. 2 We have read that when the piston goes up and down…
Question No. 1 In convection heat transfer, if heat flux intensity is doubled then temperature difference between solid surface and fluid will? Answer: Get doubled. Question No. 2 How you can define coal? Answer: Coal is a naturally occurring hydrocarbon that consists of the fossilised remains of buried plant debris that have undergone progressive physical…