Vikram Sarabhai Space Center Electronic Mechanic Paper 2015
The curve representing ohm’s law is
(a) Parabola
(b) Sine function
(c) Linear
(d) Hyperbola
As the frequency increases, the capacitive reactance of the circuit
(a) Decreases
(b) Increases
(c) remains same
(d) Increases and then remains constant
A R-L circuit has 6 ohms resistance 8 ohms inductive reactance. It’s impedance will be
(a) 6 ohms
(b) 14 ohms
(c) 10 ohms
(d) 8/6 ohms
In an oscillator, the feedback signal is
(a) in phase with the input signal
(b) in phase with the output singnal
(c) out of phase with the input signal
(d) out of phase with the output signal
The output impedance of an ideal operational amplifier is
(a) infinity
(b) zero
(c) very low
(d) very high
The calibration signal, usually available from a CRO is of the
(a) Sine wave voltage
(b) square wave voltage
(c) Saw tooth wave voltage
(d) DC voltage
A triac can be considered as a combination of
(a) two transistors
(b) two sCRS
(c) two diodes
(d) one diode and one SCR
A light dependent resistor (LDR) behave like a
(a) Capacitor
(b) Switch
(c) Dielectric medium
(d) Battery
Thermister is a transducer which converts
(a) heat into light
(b) light into heat
(c) temperature into electric signal
(d) electric signal to equivalent temperature
One ampere means the flow of
(a) one lectron each hour
(b) one coulomb each second
(c) one coulomb each minute
(d) one coulomb each hour
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