Related Questions

The lower and upper cut off frequencies are also called ___________ frequencies
A Sideband
B Resonant
C Half-resonant
D Half-power
When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?
A 80
B 100
C 30
D 150
E None of the above
Which inductor is used at high frequencies?
A Cast iron cored
B Sheet steel cored
C Iron alloy cored
D Ceramic cored
An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is
A Good
B Open
C Shorted
D Partly shorted
A band-stop filter passes frequencies between its lower and upper critical frequencies and rejects all others.
A True
B False
Frequencies above ___________ kHz are called radio frequencies
A 2
B 10
C 50
D 200
The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of
A Iron loss in core
B Skin effect
C Increase in temperature
D Capacitive effect between adjacent coil turns
You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?
A Router (config-if) #encapsulation frame-relay q933a
B Router (config - if) #encapsulation frame-relay ansi
C Router (config - if) #encapsulation frame-relay ietf
D Router (config - if) #encapsulation frame-relay cisco
The purpose of choke in tube light is ?
A To decrease the current
B To increase the current
C To decrease the voltage momentarily
D To increase the voltage momentarily
In arc furnace the function of choke is
A To stabilize the arc
B To improve power factor
C To reduce severity of the surge
D None of the above

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