ISRO Scientist or Engineer Mechanical 2010

Instructions

For the following questions answer them individually

Question 61

Two cutters are mounted on the arbor so that two faces are machined simultaneously in

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Question 62

The main alloying elements in high speed steel in order of increasing proportion are

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Question 63

Surface roughness on a drawing is represented by

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Question 64

A husband and wife appearin an interview for two vacancies for same post. The probability of husband getting selected is $$\frac {1}{5}$$ while the probability of wife getting selected is $$\frac {1}{7}$$. Then the probability that anyone of them getting selected is

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Question 65

Cylindrical parts are held on planer by

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Question 66

Expressing a dimension as $$25.3^{\pm 0.05} mm is the case of

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Question 67

In comparison to an open-loop system a closed loop system is

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Question 68

The Moody diagram is shown in Fig. The friction factor for turbulent flow in a smooth pipe is given by curve

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Question 69

A piping system consists of three pipes arranged in series, the lengths of the pipes are 1200m, 750 m and 600 m and diameters 750 mm, 600 mm, 450 mm respectively. Transform the system to an equivalent 450 mm diameter pipe

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Question 70

Friction drag is generally larger than the pressure drag in

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