A capacitor blocks A.C. but passes D.C.

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

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

While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is

A

Short-circuited

B

Open circuited

C

Alright

D

Leaky

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

In a two value capacitor motor, the capacitor used for running purposes is

A

air capacitor

B

paper spaced oil filled type

C

ceramic type

D

a.c. electrolytic type

When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is

A

Short-circuited

B

All right

C

Faulty

D

None of the above

A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be ?

A

Paper capacitor

B

Ceramic capacitor

C

Electrolytic capacitor

D

Any-of the above

A capacitor blocks A.C. but passes D.C.

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