Test Preparation on UGC NET Electronic Science Mock Test-3

1.

Assertion (A) : A reflex klystronmakes use of a single cavity.Reason (R) : The single cavityperforms the functions ofbuncher as well as catcher cavity.

2.

Assertion (A) : LP01 is basicallyHE11 mode.Reason (R) : Linearly polarisedmodes are strongly guidedmodes, in which TE and TMmodes do not have identicalpropagation constants.

3.

Assertion (A) : Combinationalcircuits have no memory,timing or feed back loop.Reason (R) : The output of combinationalcircuit depends on their input andprevious output state.

4.

Assertion (A) : Digital base bandmodulation is also referred toas TDM.Reason (R) : Pulse analogmodulation is first step inconverting analog signal toDigital Signal.

5.

Assertion (A) : Under certainconditions, one gets peakresponse at high frequency intransformer coupled amplifiers.Reason (R) : High frequency modelof transformer coupledamplifiers is a resonant circuit.

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