DSL lines terminate into DSL modems at the customer premises the same way that analog line modems terminate, the key difference between the two technologies being that the ________ modem is always on
Fill in the blank(s) with correct word
DSL
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Answer the following statement(s) true (T) or false (F)
1. Variable-speed motors are commonly used to operate light loads such as ceiling fans and blower motors. 2. One type of variable-voltage control uses a triac to control the amount of voltage applied to the motor. 3. A light dimmer can be adapted for use as a motor speed controller. 4. Triac light dimmers are intended to be used with resistive loads such as incandescent lamps. 5. Series impedance control is accomplished by connecting a tapped inductor in parallel with the motor
Which of the following features gave the HPI-TP injected engine a major advantage in controlling emissions when compared to an engine fueled by EUIs equipped with hydraulic nozzles?
A. cooler engine operation B. collapse phase at end of injection is eliminated C. fueling is not limited by a hard cam lift window D. integral control solenoid is eliminated
A wide band oxygen sensor needs to be heated to what operating temperature?
A) 2000 deg. F B) 800 deg. F C) 1400 deg. F D) 600 deg. F
The _____ ride against the commutator segments and are used to connect the armature to the external circuit of the DC machine.
A. field windings B. pole pieces C. armature windings D. brushes