1. Conventional flow assumes charges flow from:
A. Positive to negative
B. Positive to positive
C. Negative to positive
D. Negative to negative
2. Electron flow assumes charges flow from:
A. Negative to positive
B. Negative to negative
C. Positive to negative
D. Positive to positive
3. Series resonance occurs when:
A. XL = Xc
B. XL=R
C. Z=R
D. Both A and C
4. The symbol Q refers to:
A. Resonance quotient
B. Quality factor
C. Power quotient
D. Qualification test
5. The ratio of W/VA in an AC circuit means:
A. Power Factor
B. Reactive factor
C. Quality factor
D. Load factor
6. What is the reciprocal of quality factor?
A. Power factor
B. Dissipation Factor
C. Reactive factor
D. 1 /Q factor
7. In liquids and gases, ionization current results from a flow of:
A. Positive or negative ions
B. Free Electrons
C. Ions that are lighter in weight than electrons:
D. Protons
8. VL = Vc in a series RLC circuit when:
A. The value of the impedance is minimum
B. The power factor is zero
C. The current leads the total voltage by 90°
D. The total voltage is zero
9. At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 µF?
A. 7.12 KHz
B. 7.12 Hz
C. 7.12MHz
D. 7.12 GHz
10. Property of an electric circuit that dissipates electric energy:
A. Reactance
B. Impedance
C. Resistance
D. Conductance
11. What is the other name of relative permittivity?
A. Dielectric strength
B. Potential gradient
C. Breakdown voltage
D. Specific inductance capacity
12. In a series RLC circuit
A. The current lags VL by 90°
B. The current leads VL by 90°
C. XL leads X. by 90°
D. Z = jXL at resonance
13. Resistor with colored bands in the body
A. Wire-wound resistor
B. Carbon-composition resistor
C. Potentiometer
D. Rheostat
14. In a resonant circuit, if Q > 10 resonant frequency______ bandwidth.
A. Bisects
B. Exceeds
C. Is less than
D. Is equal to
15. Which of the following conditions is not true for a series RLC circuit at resonance?
A. Z=j XL
B. XL = Xc
C. The power factor is one.
16. The current is ------------- times the maximum current at half-power points of a resonance curve.
A. 0.707
B. 1.414
C. 0.5
D. 0.632
17. A gang capacitor is a variable capacitor in which capacitance is varied by changing the:
A. Dielectric
B. Number of plates
C. Distance between plates
D. Plate Area
18. In an ac circuit with inductive reactance, the
A. Phase angle of the circuit is always 45°
B. Voltage across the inductance must be 90° out-of-phase with the applied voltage
C. Current through the inductance lags its induced voltage by 90°
D. Current through the inductance and voltage across it are l80° out-of-phase
19. If three 9 mH inductors are connected in parallel without mutual inductance then the total inductance is
A. 3 mH
B. 9 mH
C. 27 mH
D. 18 mH
20. What is the specific resistance of a pure germanium?
A. 55 Ohm-cm
B. 55 Ohm-m
C. 55 Ohm-mm
D. 55 KOhm-m
