Instrumentation Transducers

Time Interval Measurement

Question 1
Marks : +2 | -2
Pass Ratio : 100%
What do you mean by duty cycle?
Ratio of on time and total time period
Ratio of off time and total time period
On time
Off time
Explanation:
Duty cycle of a system is the ratio of its on time and total time period (ton+toff).
Question 2
Marks : +2 | -2
Pass Ratio : 100%
What is the use of a gate circuit in TIM?
To produce sinusoidal signal
To produce pulse signal
To on and off input signal
None of the mentioned
Explanation:
Gate circuit is employed for making proper on and off of input signal. Two pulses, on pulse and off pulse are applied to the gate circuit.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Start and stop pulses are produced by ______________
Gate circuit
Time discriminators
Oscillators
None of the mentioned
Explanation:
Circuit that produces on and off pulses are known as time discriminators. On and off pulses are used to measure time interval between two signals.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Measuring range is not an important parameter in TIM.
True
False
Explanation:
We have to consider the operating range of signal while measuring time using TIM(Time Interval Measurement) device.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
TDC devices are used for ________________
Indicating frequency of signal
Indicating time delay in analog format
Indicating time delay in digital format
Indicating voltage level
Explanation:
Full form of TDC is time to digital converter, which indicates time delay value in digital format (binary).
Question 6
Marks : +2 | -2
Pass Ratio : 100%
TDC and TIM are used for the same application.
True
False
Explanation:
TDC and TIM work for the same application. But the difference is that TDC used for measuring time delay in digital format.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Time require by the signal to reach 63% of amplitude is known as _____________
Duty cycle
Time delay
Time constant
On time
Explanation:
Practically time constant is the time required by the signal to reach 63% of the maximum amplitude.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
When interpolation techniques are used?
For high range of measurement is required
For high resolution of measurement
For high range of measurement and high resolution of the measurement is required
Not the mentioned
Explanation:
For both high resolution and high operating range, interpolation techniques can be employed. High operating range can be achieved using analog type and high resolution can be achieved using digital type.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
What is the use of PWM technology?
To amplify output voltage
To reduce output voltage
For controlling supply voltage
For measuring voltage
Explanation:
Controlling supply voltage is one of the applications of PWM method. In PWM method signal is made on and off several times using suitable pulse waveform.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
In a time interval measuring device, two pulses are used ______________
To produce triangular wave
To start and stop gate circuit
To produce sinusoidal signal
None of the mentioned
Explanation:
Two pulses, start pulse and stop pulse are used to on and off gate circuit for measuring a time interval.