G7A13
PRACTICAL CIRCUITS · - Power supplies; schematic symbols
G7A13G7A →
Which symbol in Figure G7-1 represents a tapped inductor?
- ASymbol 7
- BSymbol 11
- CSymbol 6
- DSymbol 1
Why An inductor is drawn as a series of loops or half-circles (a coil), and a tapped inductor adds a third connection lead coming off a point in the middle of the winding, so the coil has three terminals instead of two. Symbol 7 is the coil with that extra center lead, which lets a circuit use only part of the total turns. Taps are common in matching networks and in transformers used for impedance selection.
Watch out A coil symbol with just two end leads is an ordinary fixed inductor, and a coil with an arrow drawn through it is a variable inductor; parallel lines beside the coil would indicate an iron core, not a tap.
Tapped inductor = coil with a third wire off the middle. Count the leads: three means tapped.
HamSandwich explanation, first draft. The question and answers are the NCVEC text.
The rest of G7A
- G7A01 What is the function of a power supply bleeder resistor?
- G7A02 Which of the following components are used in a power supply filter network?
- G7A03 Which type of rectifier circuit uses two diodes and a center-tapped transformer?
- G7A04 What is characteristic of a half-wave rectifier in a power supply?
- G7A05 What portion of the AC cycle is converted to DC by a half-wave rectifier?
- G7A06 What portion of the AC cycle is converted to DC by a full-wave rectifier?
- G7A07 What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?
- G7A08 Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?
- G7A09 Which symbol in figure G7-1 represents a field effect transistor?
- G7A10 Which symbol in figure G7-1 represents a Zener diode?
- G7A11 Which symbol in figure G7-1 represents an NPN junction transistor?
- G7A12 Which symbol in Figure G7-1 represents a solid core transformer?
- G7A13 Which symbol in Figure G7-1 represents a tapped inductor?