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Home » GAT Subject » Aptitude Test - 246
Hassan
1.Which one of the following phrases most accurately describes a purely capacitive circuit?
A. Resistances provide the only opposition to current flow
B. Capacitive reactance provides the only opposition to current flow
C. The ac voltage leads the current by 90 degree
D. Resistances provide the only opposition to current flow
2.The saturation point is approximately the same as
A. cutoff point
B. lower end of the load line
C. upper end of the load line
D. cutoff point
3.Which one of the following statements is true for the currents in a series RC circuit?
A. The current always has the same amplitude and phase for every part of the circuit
B. The total current is equal to the sum of the currents for the resistance and capacitance
C. The total current is greater than the sum of the currents for the resistance and capacitance
D. The current always has the same amplitude and phase for every part of the circuit
4.The total inductance of a series inductor circuit is:
A. equal to the sum of the individual inductance values
B. equal to the sum of the individual inductive-reactance values
C. less than the value of the smallest inductor
D. equal to the sum of the individual inductance values
5.Determine the resistance value and tolerance of a resistor that has the following color bands; first band is red, second band is red, third band is orange, and the fourth band is gold
A. 220 Ohm, 5%
B. 220 Ohm, 10%
C. 22,000 Ohm, 5%
D. 220 Ohm, 5%
6.Which one of the following is most likely used for measuring the rate of electron flow?
A. Voltmeter
B. Ammeter
C. Wattmeter
D. Voltmeter
7.Suppose a voltage source has an ideal voltage of 15V and a source resistance of 0.2W. For what values of load resistance will the voltage source appear stiff?
A. 20 Ohm
B. 30 Ohm
C. 10 Ohm
D. 20 Ohm
8.Which one of the following statements regarding ac circuits is correct?
A. Current and voltages are in phase through a resistor
B. Current leads the voltage through a resistor
C. Current lags the voltage through a resistor
D. Current and voltages are in phase through a resistor
9.Which one of the following statements most accurately describes the nature of inductive reactance?
A. Inductive reactance is an opposition to current flow in dc circuits
B. Inductive reactance is an opposition to current flow in ac circuits
C. Inductive reactance is another term for counter emf
D. Inductive reactance is an opposition to current flow in dc circuits
10.What are the main parts of an atom?
A. Protons only
B. Electrons, protons, and ions
C. Electrons, ions, and neutrons
D. Protons only
11.Current is
A. The flow of charged particles through a material
B. An imbalance of electrical charges
C. The force that causes electrons to flow
D. The flow of charged particles through a material
12.A real voltage source has
A. Zero internal resistance
B. Infinite internal resistance
C. A small internal resistance
D. Zero internal resistance
13.Which one of the following statements is true?
A. Current flows in a capacitor circuit only while ions are permitted to flow through the dielectric material
B. Current flows in a capacitor circuit only while the charge on the plates is large enough to force the dielectric to conduct electrons
C. Current can flow in a capacitor circuit, but not through the dielectric material itself
D. Current flows in a capacitor circuit only while ions are permitted to flow through the dielectric material
14.What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W?
A. 692.2 Ohm
B. 844.5 Ohm
C. 3890 Ohm
D. 692.2 Ohm
15.Holes act like:
A. Atoms
B. Crystals
C. Negative charges
D. Atoms
16.How may valence electrons does a silicon atom have?
A. 0
B. 1
C. 2
D. 0
17.Reducing the amount of current through an inductor:
A. reduces the value of inductance by one-half
B. multiplies the value of inductance by four
C. multiplies the value of inductance by two
D. reduces the value of inductance by one-half
18.Which one of the following statements best applies to a series RLC circuit?
A. The voltage waveform for each component always has the same amplitude and phase as the applied voltage
B. The current waveform for each component always has the same amplitude and phase as the applied current
C. All of the above
D. The voltage waveform for each component always has the same amplitude and phase as the applied voltage
19.When applying a square waveform to a capacitor, the circuit tends to:
A. peak the voltage and round off the current waveforms
B. peak the current and round off the voltage waveforms
C. round off both the voltage and current waveforms
D. peak the voltage and round off the current waveforms
20.Which one of the following properties of a magnetic circuit can be directly compared to current in an electrical circuit?
A. Number of lines of force
B. Flux density
C. Reluctance
D. Number of lines of force
21.Who invented the first junction transistor?
A. Smith
B. Gomes
C. Fisher
D. Smith
22.When a series RLC circuit is operating at its resonant frequency:
A. capacitive reactance is greater than the inductive reactance
B. inductive reactance is greater than the capacitive reactance
C. inductive reactance is equal to the capacitive reactance
D. capacitive reactance is greater than the inductive reactance
23.Which one of the following equations most directly leads to the resistance of an ordinary household light bulb, assuming that you know the power and voltage rating?
A. R = E2/P
B. P = PR
C. P = E2/R
D. R = E2/P
24.The total capacitive reactance of a parallel capacitor circuit is:
A. equal to the sum of the individual capacitive-reactance values
B. equal to the sum of the individual capacitance values
C. equal to the source voltage divided by total current
D. equal to the sum of the individual capacitive-reactance values
25.Thevenin theorem replaces a complicated circuit facing a load by an
A. Ideal voltage source and parallel resistor
B. Ideal current source and parallel resistor
C. Ideal voltage source and series resistor
D. Ideal voltage source and parallel resistor
26.What kind of device is a diode?
A. Bilateral
B. Linear
C. Nonlinear
D. Bilateral
27.Which one of the following statements applies to common, non-rechargeable flashlight batteries?
A. Common flashlight batteries are secondary wet-cell batteries
B. Common flashlight batteries are primary wet-cell batteries
C. Common flashlight batteries are primary dry-cell batteries
D. Common flashlight batteries are secondary wet-cell batteries
28.The total inductive reactance of a parallel inductor circuit is:
A. equal to the sum of the individual inductive-reactance values
B. equal to the sum of the individual inductance values
C. equal to the source voltage divided by total current
D. equal to the sum of the individual inductive-reactance values
29.A step-down transformer has turns ration of 5:1. If the primary voltage is 120 Vrms, what is the secondary voltage?
A. 12 V
B. 18 V
C. 24 V
D. 12 V
30.Which one of the following statements regarding ac circuits is correct?
A. Current and voltage are in phase through an inductor
B. Current leads the voltage through an inductor
C. Current lags the voltage through an inductor
D. Current and voltage are in phase through an inductor
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