Types of Oscilloscope MCQ || Types of cathode Ray Oscilloscope Questions and Answers

Answer.4. Unlimited

Explanation: 

Digital storage oscilloscopes use digital memory where the data are stored and hence the storage time is virtually unlimited.

The memory can store data as long as required without degradation. It also allows the complex processing of the signal by the high-speed digital signal processing circuits.

Answer.4. Microprocessor

Explanation: 

• In the Digital storage oscilloscope, the input signal is applied to the amplifier and attenuator section.
• The oscilloscope uses the same type of amplifier and attenuator circuitry as used in conventional oscilloscopes.
• The attenuated signal is then applied to the vertical amplifier.
• The vertical input, after passing through the vertical amplifier, is digitized by an analog to digital converter to create a data set that is stored in the memory.
• The data set is processed by the microprocessor & then sent to the display.

Answer.2. Hold Mode

Explanation: 

• In Digital storage Oscilloscope hold is otherwise called save mode.
• When a new sweep signal is generated by a time base generator, the old contents get overwritten by the new one.
• If a particular signal is to be stored then by processing hold or save button, overwriting can be stopped and the previously saved signal is locked

Answer.3. Digital form

Explanation: 

• In this digital storage oscilloscope, the waveform to be stored is digitized and then stored in digital memory.
• The digital storage oscilloscope eliminates the disadvantages of the analog storage oscilloscope.
• It replaces the unreliable storage method used in analog storage oscilloscope with digital storage with the help of memory.
• The memory can store data as long as required without degradation. It also allows the complex processing of the signal by the high-speed digital signal processing circuits.

Answer.4. All of the above

Explanation: 

• Digital oscilloscopes usually analyze waveforms and provide numerical values as well as visual displays.
• These values typically include averages, maxima and minima, root mean square (RMS) and frequencies.
• They may be used to capture transient signals when operated in a single sweep mode, without the brightness and writing speed limitations of an oscilloscope.

Answer.4. Conventional

Explanation: 

The conventional cathode ray tube is used in this oscilloscope hence the cost is less. The power to be applied to memory is small and can be supplied by a small battery.

Due to this, the stored image can be displayed indefinitely as long as power is supplied to memory. Once the waveform is digitized then it can be further loaded into the computer & can be analyzed in detail.

Answer.4. 100000 samples/sec

Explanation: 

• The digitizing the analog input signal means taking samples at periodic intervals of the input signal.
• The rate of sampling should be at least twice as fast as the highest frequency present in the input signal. This ensures no loss of information.
• The sampling rates as high as 100,000 samples per second are used. This requires a very fast conversion rate of an A/D converter.

Answer.1. Low

Explanation: 

The conventional cathode ray tube is used in this oscilloscope hence the cost is less. The power to be applied to memory is low and can be supplied by a small battery.

Due to this, the stored image can be displayed indefinitely as long as power is supplied to memory. Once the waveform is digitized then it can be further loaded into the computer & can be analyzed in detail.

Answer.3. A/D converter

Explanation: 

• To digitize the analog signal, an analog to digital (A/D) converter is used.
• The output of the vertical amplifier is applied to the A/D converter section.
• The main requirement of an A/D converter in the digital storage oscilloscope is its speed, while in digital voltameters accuracy and resolution were the main requirements.
• The digitized output is needed only in the binary form and not in BCD.
• The successive approximation type of A/D converter is used in the digital storage oscilloscopes.

Answer.4. All of the above

Explanation: 

The advantages of digital storage oscilloscopes are as follows

• The storage time is infinite.
• It can be easily operated and has more capability.
• Digital storage oscilloscope allows flexible display property.
• The cursor measurement is possible.
• The X-Y plots, B-H curve, P-V diagrams can be displayed