1. Surface plate is used to check the trueness of flat surfaces.



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MCQ->Surface plate is used to check the trueness of flat surfaces.....
MCQ->Mrs. Carson took a taxi to meet her three friends for lunch. They were waiting for her outside the restaurant when she pulled up in the car. She was so excited to see her friends that she left her tote bag in the taxi. As the taxi pulled away, she and her friends took notice of the license plate number so they would be able to identify the car when they called the taxi company. #1: The four women seem to agree that the plate starts out with the letter J. #2: Three of them agree that the plate ends with 12L. #3: Three of them think that the second letter is X, and a different three think that the third letter is K. The four license plate numbers below represent what each of the four women thinks she saw. Which one is most likely the license plate number of the taxi?

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MCQ->The simplest method of welding two pieces of metal together is known as pressure welding.The ends of a metal are heated to a white heat-for iron,the welding temperature should be about 1300C-in a flame.At this temperature the metal becomes plastic.The ends are pressed or hammered together,and the joint is smoothed off.Care must be taken to ensure that surfaces are thoroughly clean first,for dirt will weaken the weld.Moreover,the heating of iron or steel to a high temperature cause oxidation,and a film of oxide is added to the heated surfaces.For this reason,flux is applied to the heated metal.At welding heat,flux melts and the oxide particles are dissolved in it together with any other impurities which may be present.The metal surfaces are pressed together,and the flux is squeezed out from the center of the weld.A number of different types of weld may be used,but for fairly thick bars of metals,a vee-shaped belt should be normally employed.It is rather stronger than ordinary butt weld. The simplest way of welding two pieces of metal together is....
MCQ->After lunch,I felt at a loose end and roamed about the little flat.It suited us well when mother was with me,but now I was by myself it was too large and I'd moved the dining room table into my bed room.That was now the only room I used,it had all the furniture I needed,a brass bedstead,a dressing table,some cane chairs whose seats were more or less caved in,a wardrobe with a tarnished mirror.The rest of the flat was never used,so I didn't trouble to look after it. The flat did not really suit him any more because....
MCQ->A thin, flat & square plate measuring 2 m x 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2 . The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m2 °C.....
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