20) For a Wien Bridge oscillator the voltage gain should be

Greater than or equal to 3

Lesserthan 1

01-Feb

Answer is:

Greater than or equal to 3

ISRO Technician-B Electronic Mechanic Question Paper - 2019 (Set - 1) with Answer Key

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21) A transformer is connected to a fixed ac voltage at the primary and a fixed load resistor at the secondary. What is the effect of decreasing the number of turns in the secondary winding?

Increase the secondary current

Decrease the secondary current

Have no effect on the secondary current

Increase the primary current

Answer is:

Decrease the secondary current

22) What are the circuit modules contained in a Phased locked loop circuit?

High Pass filter, comparator and VCO

Phase comparator, bandpass filter and VCO

Low Pass filter, phase comparator and demodulator

Phase comparator, low-pass filter and VCO

Answer is:

Phase comparator, low-pass filter and VCO

23) Which of the following is not true for an inductor?

An inductor can store energy.

An inductor current cannot change instantaneously.

An inductor acts as oper to dc.

An inductor can be used to reduce ripple voltage

Answer is:

An inductor acts as oper to dc.

Which of the following is not true for an inductor?

24) Number of solutions for the system of linear equations 2x-y=3, -4x+2y=-6 is

infinite

unique

two

no solution

Answer is:

infinite

ISRO Technician-B Electronic Mechanic Question Paper - 2019 (Set - 1) with Answer Key

For more MCQ's Click Here

20) For a Wien Bridge oscillator the voltage gain should be

Greater than or equal to 3

ISRO Technician-B Electronic Mechanic Question Paper - 2019 (Set - 1) with Answer Key

Related ISRO Technician-B Electronic Mechanic Question Paper - 2019 (Set - 1) with Answer Key

21) A transformer is connected to a fixed ac voltage at the primary and a fixed load resistor at the secondary. What is the effect of decreasing the number of turns in the secondary winding?

Decrease the secondary current

22) What are the circuit modules contained in a Phased locked loop circuit?

Phase comparator, low-pass filter and VCO

23) Which of the following is not true for an inductor?

An inductor acts as oper to dc.

24) Number of solutions for the system of linear equations 2x-y=3, -4x+2y=-6 is

infinite

ISRO Technician-B Electronic Mechanic Question Paper - 2019 (Set - 1) with Answer Key