Transmission line insulators are made of

The use of strain type insulators is made where the conductors are

A

Dead ended

B

At intermediate anchor towers

C

Any of the above

D

None of the above

কোনো খেলার সরাসরি সম্প্রচারের ডেটা ট্রান্সমিট হবার প্রক্রিয়া- (i) Broadcast Transmission (ii) Duplex Transmission (iii) Simplex Mode Transmission নিচের কোনটি সঠিক?

A

i ও ii

B

i ও iii

C

ii ও iii

D

i ii ও iii

Pin type insulators are generally not used for voltages beyond

A

1 kV

B

11 kV

C

22 kV

D

33 kV

Which of the following is not a constituent for making porcelain insulators?

A

Quartz

B

Kaolin

C

Felspar

D

Silica

Are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators.

A

Varistors

B

Thermistor

C

Semiconductors

D

Variable resistors

This group of alumino-silicate minerals is widely used in making electrical insulators

A

Bauxite

B

Chromite

C

Manganese

D

Mica

It is best to use for coupling a coaxial line to a parallel wire transmission line.

A

Directional Coupler

B

Balun

C

Slotted line

D

Tee

What will be the reflection co-efficient of the wave of load connected to transmission line if surge impedance of the line is equal to load ?

A

Zero

B

Unity

C

Infinity

D

None of the above

The interaction between a transmission line and communication line is minimized by

A

transposing transmission as well as communication lines

B

increasing the height of the trans-mission line tower

C

increasing the distance between the two lines

D

all of the above

The major purpose of an electronically controlled automatic transmission is that this type of transmission

A

Eliminates gear clutches

B

Eliminates the gear shaft lever

C

Reduces the number of automatic transmission components

D

Reduces shift shock and achieves more efficient transmission of engine torque

Transmission line insulators are made of

Related Questions