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Electrical Test Methods


Quiz Questions

1.Voltages are usually measured by placing the measuring device in parallel with the component or circuit (load) to be measured. The measuring device should have an infinite internal resistance input impedance) so that it will absorb no energy from the circuit under test and, therefore, measure the true voltage.
True
False
2. Figure 1-5 represents
Ac-dc differential voltmeter,
Digital multimeter
3. A major advantage of using an _____________ for ac voltage measurements is that the waveform can be observed; consequently, errors in measuring complex peak voltages are minimized. It may be used as a high-impedance ac voltmeter.
Oscilloscopes
Multimeters
Voltmeters
4. In page 28, ______________ produce the large voltages that are required to measure resistances as high as 10,000megohms – only high resistance values can be measured.
Meggers
Bridges
5. The Hay Bridge (view B of fig. 1-14) differs from the Maxwell Bridge (view C) in figure 1-14. The difference is – for the Hay Bridge resistance associated with the capacitance is a series instead of a shunt resistance.
True
False
6. In pages 1-20 and 1-21 the Maxwell & Hay Bridges are used to calculate:
Inductances
Resistances
7. The factors affecting the life expectancy of the________ are listed in page 43.
Electron Tube
Klystron Tube
8. Electrostatic Discharge Sensitive (ESDS) devices can be grouped by their sensitivity to ESD as ____________
Very sensitive devices,
Moderate sensitive devices,
Sensitive devices
All the above
9. RF diode test and switching diode test are the types of diode testers.
True
False
10. Figures 2-8 to 2-11 represent the different characteristics of different diodes.
True
False
11. Figure 2-23 represents:
Types of ICs
Types of diodes
12. The Wheatstone, Schering, Kelvin, Hay, Resistance-Ratio and Maxwell bridges are the basic bridge circuits as shown in page 3-2.
True
False
13.The resistance-ratio bridge, shown in figure 3-1, may be used to measure ___________________ so long as the electronic part to be measured is compared with a similar standard.
Capacitance, inductance, or resistance
Capacitance and inductance
14. The ________________ is used to measure power taken from ac or dc power sources. It uses the reaction between the magnetic fields of two current-carrying coils (or sets of coils), one fixed and the other movable as shown in figure 3-10.
Electrodynamic wattmeter
Converter
15. The absorption, the reaction, and the transmission types are three basic kinds of wave meters.
True
False
16. The Hewlett-Packard Model 415E SWR meter, shown in figure 4-3, is a commonly used SWR meter.
True
Flase
17. What does the formula for impedance represent on page 4-9?
Impedance for a coaxial line
Impedance of a Conductor
18. In page 4-11 the attenuation for a coaxial line is described in terms of decibels per foot.
True
Flase
19. Wave-Envelope and Trapezoidal Pattern are the two types of _____________
Modulation Patterns
Waveform Patterns
20. Rate of frequency shift is inversely proportional to the frequency of the modulating signal.
True
False