Related Questions

A centrifugal switch is used to disconnect starting winding when motor has
A run for about 1 minute
B run for about 5 minutes
C picked up about 50 to 70 per cent of rated speed
D picked up about 10 to 25 per cent of rated speed
Centrifugal switch disconnects the auxiliary winding of the motor at about ____ percent of synchronous speed
A 30 to 40
B 70 to 80
C 80 to 90
D 100
If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then
A motor will not come up to speed
B motor will not carry the load
C current drawn by the motor will be excessively high
D electrolytic capacitor will, in all probability, suffer break down
In case one phase of a three-phase synchronous motor is short-circuited the motor will
A Not start
B Run at $$\frac{2}{3}$$ of synchronous speed
C Run with excessive vibrations
D Take less than the rated load
The reason clean energy is hard to come by is that we've spent the past 150 years depending on oil, and it's quite difficult to make the switch. Here "difficult to make the switch" is related to
A Replacing analogue oil with digital fluid
B manufacturing
C inventing
D controlling
You connect a host to a switch port, but the new host cannot log into the server that is plugged into the same switch. What could the problem be?
A The router is not configured for the new host
B The VTP configuration on the switch is not updated for the new host
C The host has an invalid MAC address
D The switch port the host is connected to is not configured with the correct VLAN membership
The switch that has the fastest speed of operation is ___________ switch.
A Electronic
B Mechanical
C Electromechanical
D None of the above
The most inexpensive switch is ___________ switch.
A Electronic
B Mechanical
C Electromechanical
D None of the above
If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?
A Discard it and send an error message back to the originating host
B Flood the network with the frame
C Add the source address and port to the MAC address table and forward the frame out the destination port
D Add the destination to the MAC address table and then forward the frame
Of the 120 households in an area, 55 have cars, 35 have motor bikes, and 20 have both cars and motor bikes. How many of the households in the area have neither cares nor motor bikes?
A 110
B 90
C 50
D 30

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