Display Devices and Signal Generators - MCQs with answers

Display Devices and Signal Generators - MCQs with answers


Q1. The different types of analog recorders are

A. Graphic recorders
B. Oscillographic recorders
C. Magnetic tape recorders
D. All of these

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ANSWER: D. All of these



Q2. X-Y recorders is the type of

A. Graphic recorders
B. Oscillographic recorders
C. Magnetic tape recorders
D. Digital recorders

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ANSWER: A. Graphic recorders



Q3. The measurements which can be simplifies by using X-Y recorders is /are

A. Speed-torque characteristics of motors
B. Regulation curves of power supplies
C. Hysteresis curves
D. All of these

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ANSWER: D. All of these



Q4. Depending on whether the display is a numeric or alphanumeric, the segmental displays is

A. 7 segmental
B. 14 segmental
C. 21 segmental
D. Either (a) or (b)

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ANSWER: D. Either (a) or (b)



Q5. In light emitting diode, the available light emitting region is

A. Less than 2.5 mm
B. From 2.5 to 25 mm
C. Greater than 25 mm
D. Greater than 50 mm

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ANSWER: B. From 2.5 to 25 mm



Q6. In liquid crystal displays, the liquid crystal exhibits properties of

A. Liquid
B. Solids
C. Gases
D. Both (a) and (b)

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ANSWER: D. Both (a) and (b)



Q7. A liquid crystal display requires

A. An ac drive
B. A dc drive
C. Both ac and dc drive
D. None of these

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ANSWER: A. An ac drive



Q8. The full range of audibility in audio frequency oscillator is

A. 0 to 20 Hz
B. 20 Hz to 2 kHz
C. 20 Hz to 20 kHz
D. 20 Hz to 20 MHz

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ANSWER: C. 20 Hz to 20 kHz



Q9. The basic difference between square wave and pulse generator is their

A. Waveforms shape
B. Duty cycles
C. Frequency range
D. Cost

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ANSWER: B. Duty cycles



Q10. In function generator, the output waveform of integrator is

A. Sinusoidal
B. Square
C. Triangular
D. Saw-tooth

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ANSWER: C. Triangular


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