The stone blocks approximately triangular in shape, used as steps, are known

How many blocks away will Fred be from his starting p;ace if he travels two blocks north , then three blocks east, and then two blocks south?

A

Four

B

Two

C

Three

D

Zero

How many blocks away will Fred be from his starting place if he travels two blocks north, then three blocks east and then two blocks south?

A

Four

B

Two

C

Three

D

Zero

3/4th of square were taken to form shape A and the rest was made to form shape B. Shape A was divided into four equal squares (Shape C), what will be the ratio of the one shape C to one shape B.

A

1:4

B

3:16

C

1:2

D

3:4

Mr. Ali decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?

A

23 steps

B

16 steps

C

46 steps

D

26 steps

A bus picks up a group of tourists at a hotel. The sightseeing bus travels 2 blocks north, 2 blocks east. I block south, 2 blocks east, and 1 block south. Where is the bus in relation to the hotel?

A

2 blocks north

B

1 block west

C

3 blocks south

D

4 blocks east

H উচ্চতায় অবস্থিত একটি বেলুন থেকে একটি পাথর ছেড়ে দিলে তা । উচ্চতায় অবস্থিত একটি হেলানো তনের উপর আছড়ে পড়ে। হেলানো শুলকে আঘাতের পর পাথরটির বেগ আনুভূমিক হয়। h/H এর মান কত হলে পাথরটি ভূমিকে স্পর্শ করতে সর্বোচ্চ সময় নিবে? (A stone falls from a balloon at a height of H above the ground and hits an inclined plane in its path at a height of h. After impact, the velocity of the stone becomes horizontal. What should be the value of hill so that the stone will take maximum time to reach the ground?)

A

H-hh

B

12

C

32

D

hH-h

E

2

For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

A

Binary mixture is represented by the apex

B

Binary mixture is represented by any point inside

C

Ternery mixture is represented by the sides

D

Pure component is represented by the apex

In a band and block brake, the ratio of tensions on tight side and slack side of the band is (where $$\mu $$ = Coefficient of friction between the blocks and the drum, $$\theta $$ = Semi-angle of each block subtending at the center of drum and n = Number of blocks)

A

$$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2}}} = \mu \theta {\text{n}}$$

B

$$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2}}} = {\left( {\frac{{1 - \mu \tan \theta }}{{1 + \mu \tan \theta }}} \right)^{\text{n}}}$$

C

$$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2}}} = {\left( {\mu \theta } \right)^{\text{n}}}$$

D

$$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2}}} = {\left( {\frac{{1 + \mu \tan \theta }}{{1 - \mu \tan \theta }}} \right)^{\text{n}}}$$

In a band and block brake, the ratio of tensions on the tight and slack sides of band is given by (where $$\mu $$ = Coefficient of friction between the blocks and the drum, $$\theta $$ = Semi-angle of each block subtending at the centre of drum and n = Number of blocks)

A

$$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_{\text{2}}}}} = \mu \theta \times {\text{n}}$$

B

$$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2}}} = {\left( {\mu \theta } \right)^{\text{n}}}$$

C

$$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2}}} = {\left( {\frac{{1 - \mu \tan \theta }}{{1 + \mu \tan \theta }}} \right)^{\text{n}}}$$

D

$$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2}}} = {\left( {\frac{{1 + \mu \tan \theta }}{{1 - \mu \tan \theta }}} \right)^{\text{n}}}$$

Most architectural firms and mechanical design companies utilize different categories of blocks. These sets of blocks are usually housed in _________.

A

Block vaults

B

Block libraries

C

Block books

D

Block references

The stone blocks approximately triangular in shape, used as steps, are known

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