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Home » GAT Subject » Computer Science » Aptitude Test - 118
1.Who invented the first junction transistor?
A. Smith
B. Gomes
C. Fisher
D. Smith
2.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
3.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
4.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
5.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
6.What kind of device is a diode?
A. Bilateral
B. Linear
C. Nonlinear
D. Bilateral
7.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
8.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
9.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
10.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
11.Doubling the operating frequency of a capacitive circuit:
A. doubles the amount of a capacitive reactance
B. has no effect on the capacitive reactance
C. cuts the capacitive reactance in half
D. doubles the amount of a capacitive reactance
12.The net charge of a neutral copper atom is
A. 0
B. 1
C. -1
D. 0
13.Which one of the following statements is true for the voltage in a parallel RL circuit?
A. The voltage always has the same amplitude and phase for every part of the circuit
B. The total voltage is equal to the sum of the voltages across the resistance and inductance
C. The total voltage lags the total current by less than 90
D. The voltage always has the same amplitude and phase for every part of the circuit
14.A low-pass filter:
A. passes lower-frequency signals and reduces higher-frequency signals
B. passes higher-frequency signals and reduces lower-frequency signals
C. has no effect on ac signals
D. passes lower-frequency signals and reduces higher-frequency signals
15.What is one important thing transistors do?
A. Emit light
B. Amplify weak signals
C. Regulate voltage
D. Emit light
16.At room temperature an intrinsic silicon crystal acts approximately like
A. a battery
B. a conductor
C. an insulator
D. a battery
17.What is the algebraic sum of this series of values:+2, -3, -6,+4?
A. -6
B. -3
C. 0
D. -6
18.When operating below its resonant frequency, a parallel RLC circuit has the characteristics of a:
A. parallel RL circuit
B. parallel RC circuit
C. parallel RLC circuit operated above its resonant frequency
D. parallel RL circuit
19.What causes the depletion layer?
A. Doping
B. Recombination
C. Barrier potential
D. Doping
20.Which one of the following statements most accurately reflects the nature of ac power?
A. The current in an ac circuit flows in one direction, but changes value periodically
B. The current in an ac circuit flows in one direction at a steady level
C. The current in an ac circuit changes direction periodically
D. The current in an ac circuit flows in one direction, but changes value periodically
21.A step-up transformer has a turns ratio of 1:4. If the line voltage is 115 V rms, what is the peak secondary voltage?
A. 700 V
B. 707 V
C. 651 V
D. 700 V
22.Which one of the following principles best describes the basic operation of a generator?
A. Like magnetic poles repel; unlike poles attract
B. Current is induced in a conductor that is moving through a magnetic field
C. Like magnetic poles attract; unlike poles repel
D. Like magnetic poles repel; unlike poles attract
23.The current gain of a transistor is defined as the ratio of the collector current to the
A. base current
B. emitter current
C. supply current
D. base current
24.What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm?
A. 220 ohm
B. 150 ohm
C. 445 ohm
D. 220 ohm
25.The equivalent of 1 kV is:
A. 1.00 V
B. 1000 V
C. 100 mV
D. 1.00 V
26.The period of a waveform is:
A. the time required to complete one full cycle
B. the number of cycles completed in one second
C. the time required for the voltage to rise from 10% to 90% of the peak amplitude
D. the time required to complete one full cycle
27.How do you configure a printing pool?
A. Associate one print device with multiple printers
B. Associate multiple print devices with one printer
C. Associate multiple print devices with multiple printers
D. Associate one print device with multiple printers
28.You want to connect 2 networks that are both lOBaseT Ethernet networks. The 2 networks are located in separate buildings so that they are approximately 1,000 meters apart. Which media should you use?
A. Type 1 STP Cable
B. RG-58 A/U Coaxial Cable
C. fiber-optic cable
D. Type 1 STP Cable
29.You install Windows NT Server on a computer, making the computer a backup domain controller in an existing domain. After installation, you discover that you used the wrong domain name. What should you do?
A. Change the domain name by using Control Panel
B. Modify the domain name in the Registry
C. Reinstall Windows NT Server
D. Change the domain name by using Control Panel
30.In your company, 2 Ethernet Networks are connected with a router. All network connections run TCP/IP. Your new client computer can access only the computers on your side of the router. All other computers are able to access one another. What is the most likely cause of the problem?
A. incorrect termination of the destination network
B. defective network adapter in the router
C. incorrect subnet mask on your client computer
D. incorrect termination of the destination network
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