Answer / kamal rawat

HUB IS DISTRIBUTED STATION BUT SWITCH IS CHANGEABLE STATION

Answer / rahul saha

hub can be controlled through program and setting
instructions but not generally manual,

switch are generally mechanically / electrically controlled
device.

Answer / sunil kumar

Hub is non managable & switches are managable.

Answer / samrat kar

A hub is a unsophisticated broadcast device. Any packet
entering any port is broadcast out on every port and thus
hubs do not manage any of the traffic. Since every packet is
constantly being sent out through every port, chances of
data collision is more and thus it impedes the smooth flow
of traffic.
A switch isolates ports, meaning the every received packet
is sent out only to the port on which the target may be
found. If proper port is not found, then it will broadcast
the packet to all ports. So using switch network performance
can be greatly increased.

Answer / parmar.ic@gmail,com

hub is basically multiport repeater. They till several
devieces together onto a common connection in essentially a
bus connection.
switche is basically a multiported bridge that can operate
dedicated channels between two distinct station . They are
operate by sorting data packets and sending them to a
specific address.

Answer / keval

hub is used in physical layer while switch are used in data
link layer.

Describe all types and levels (4-20mA, 0-10V, mV, pulse, etc.)of analog and digital I/O used in process control application.

2 Answers   Jindal,

Reasons for using current as signal

1 Answers  

hi i am eswar i want to know the instrumentation interview questations for eil(engineers india ltd) i have applied for engineer post in eil please help in this.my mail id eswar310@gmail.com

0 Answers  

i am confusing about differential pressure transmitter as i seen so many DPTs in different ranges how can we calculate level and flow with mmh20 plz tel me

1 Answers  

The document / drawing that is primarily used in depicting the “Bill of Materials (BOM)” of piping system is the

2 Answers  

what is installation and commissioning of (fat & sat) of power plant dcs ? this question keeps in desirable conditions of one company .

0 Answers  

what is the basic working principle of I/P and Positioner in any control valve.

12 Answers   Essar, Visa Steel,

what is a vortex flow meter,mass flow meter and electromagnetic flow meter.particular use of this.means in which condition particular meter is used.

0 Answers   L&T,

why we use impulse line of flow transmitter at 45 deg. angle both side of orifice plate.

0 Answers  

How will you test a transistor with a multimeter?

0 Answers  

How many input(Analog and digital) and outputs(Analog and digital) are there in DELTA v DCS Version 7.0?

2 Answers  

can any one give me the cost price of yokogawa & rosemount transmitters

4 Answers