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Showing posts from April, 2015

Activity 3: Item rates for "Installation of Exhaust fans in Residential quarters"

Here, item specifications and their rates are given for " installation of exhaust fans in residential quarters". Assumptions made: 1. Exhaust fans of  Bajaj make, 50 HZ, 225/250 MM sweep, 240 V AC  are supplied separately. 2. No provision is available to install exhaust fan in kitchen. 3. Total number of fans to be installed are of 29 Nos. with the above assumptions, the specifications and item rates for the above work are as given below: Sl. No. Description of item Unit Quantity Rate (Rs.) Amount (Rs.) 1 Installation & Commissioning  of light duty exhaust fan , Bajaj make, 50 HZ, 225/250 MM sweep, 240 V AC operated complete with suitable wooden supporting frame , fan blades, nuts and bolts, fan regulator, capacitor, 6A 3 pin plug top for terminals of exhaust fan and all other accessories and bird proof net with 24mm×21mm mesh size &14SWG wire in a wooden structure outside exhaust fan opening includin

Important MCQ on Power systems - 9

1.        When a pumped storage power plant is operated in conjunction with a steam power plant a.        The operating cost of the steam plant becomes optimum b.       Load factor of the steam plant is increased c.        Chances of the tripping of the system decreases because of the use of two heterogeneous types of plants d.       Operation of the storage plant in the pumping mode during the low-load period improves the steam-plant stability 2.        Usage of materials in components of a nuclear reactor:     Graphite is used in moderators;   Boron is used in control rods ;   Sodium is used as a coolant ;  Concrete is used as a shield 3.        A 100km long transmission line is loaded at 110kV. If the loss of line is 15MW and the load is 150MVA, the resistance of the line is a.        8.06 ohms per phase b.       0.806 ohms per phase c.        0.0806 ohm per phase d.       80.6 ohms per phase 4.        Two insulator discs of identical capacitance value C ma