Q.1
A series ohmmeter circuit uses a 3 V battery and a 1 mA meter movement. What is the half-scale resistance for this movement?
Q.2
The size of air cored transducers in comparison to the iron core parts is
Q.3
pH value of venous blood is
Q.4
The amplifier gain varies with frequency. This happens mainly due to
Q.5
The negative feed back in an amplifier
Q.6
The improper response time of the amplifier in the biomedical recorders
Q.7
LVDT is an/a ___________ transducer.
Q.8
Piezo – electric transducers work when we apply _____________ to it.
Q.9
Capacitive transducers are normally employed for___________ measurements.
Q.10
Self generating type transducers are ___________ transducers.
Q.11
In a graded index fiber, the total reflected light takes a ___________.
Q.12
The CMRR of a typical IC OPAMP is
Q.13
If the negative potential on the control grid of CRT is increased, the intensity of spot ___________.
Q.14
Isolation amplifier actually operates on the principle of
Q.15
If the full-scale deflection current of a multimeter is 50 µA, its sensitivity is
Q.16
Which of the following is likely to have the largest resistance?
Q.17
Feedback in an amplifier always helps in
Q.18
The capacitance microphone is used for the detection of
Q.19
The resolution limit of electron microscope is
Q.20
Which of the following are piezo electric substances?
1. Barium titanate
2. Lead titanate
3. Lead Zirconate
4. Cadmium and sulphate
Q.21
A chopper amplifier
Q.22
The sensitivity factor of strain gauge is normally of the order of
Q.23
The transducers that converts the input signal into the output signal, which is a discrete function of time is known as ___________ transducer.
Q.24
An ammeter should have ___________ resistance.
Q.25
A voltmeter should have ___________ resistance.
Q.26
In PMMC writing system, the magnitude of pen deflection is proportional to
S1: Current flowing through the coil
S2: Voltage in the coil
Q.27
The horizontal plates of a CRO are supplied with ___________ to observe the waveform of signal.
Q.28
Storage oscilloscope operates on the principle of
Q.29
The principle of operation of LVDT is based on the variation of
Q.30
A VTVM is never used to measure ___________.
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