Rajasthan Technical Education Second Year Paper 2016 – Electronic Instruments
Fall form of C.R.O is
(a) Cathode Ray Oscillator
(b) Cathode Ray Oscilloscope
(c) Cathode Ray Odometer
(d) Cosmic Ray Oscilloscope
Which amplifier is used in an electronic multimeter ?
(a) Power amplifier
(b) Buffer amplifier
(c) Differential amplifier
(d) None of the above
Lissajous pattern obtained by CRO is used to determine
(a) Amplitude of applied signal
(b) Current in a circuit
(c) Phase shift and frequency
(d) Distortion in a system
Sensitivity of voltmeter is expressed as
(a) Volts/ohms
(b) Ohms/volts
(c) Ohms-volts
(d) 1/ohms-volts
The function of a shunt in range multiplier is
(a) Bypass the current
(b) Increase current in the coil
(c) Decrease in voltage
(d) Increase in meter resistance
The focus adustment of a CRO varies with
(a) Grid voltage of CRT
(b) the filament voltage
(c) second anode voltage
(d) the accelerating voltage
Volts/div setting in a CRO changes the
(a) Gain of vertical amplifier
(b) Gain of horizontal amplifier
(c) Filament voltage
(d) None of the above
“Meggar”is essentially a
(a) Mega ohm meter
(b) Shunt type ohm meter
(c) Series type ohm meter
(d) Dynamometer
The principle of operation of Q-meter is based on
(a) Self Inducatance
(b) Mutual Inductance
(c) Series Resonance
(d) Parallel Resonance
AF output power meter is used to measure the output power of
(a) Audio amplifier
(b) Video amplifier
(c) Microwave amplifier
(d) All of above
10 : 1 CRO probe is used to
(a) increase the input to CRO
(b) reduce the input to CRO
(c) increase the output of CRO
(d) reduce the output of CRO
The FET voltmeter employ’s FET’s in
(a) Cascade mode
(b) Differential mode
(c) Cascode mode
(d) Common mode
Common mode voltage is defined as
(a) the average voltage exists as both input terminals w.r.t ground
(b) the difference voltage exits at both input termials w.r.t ground
(c) the voltage exists commonly at both input terminals
(d) None of the above
Leave a Reply