Related Questions

The advantage of cables over overhead transmission lines is
A Easy maintenance
B Low cost
C Can be used in congested areas
D Can be used in high voltage circuits
The time interval from when the given star passes directly overhead to when it next passed directly overhead, is defined as
A one sidereal day
B one solar day
C both the terms are similar, so any of these may be used
D None of the above
When the actual overhead is less than the absorbed overhead it is ________.
A over absorption
B under absorption
C equal absorption
D major absorption
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
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?
A Interface
B Modem
C Attenuation
D Teleprocessor
E None of the above
Overhead lines for power supply to tram cars are at a minimum height of
A 3 m
B 6 m
C 10 m
D 15 m
Overhead lines generally use
A Copper conductors
B All aluminium conductors
C A.C.S.R. conductors
D None of these
The conductors of the overhead lines are
A solid
B stranded
C both solid and stranded
D none of the above
An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii)
A Less number of trays are required
B Composition of the residue remains unchanged
C More number of trays are required but the residue composition remains unchanged
D More number of trays are required and the residue composition is more dilute in methanol
Which of the following relays is used on long transmission lines?
A Impedance relay
B Mho's relay
C Reactance relay
D None of the above

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