44) In a class B push-pull amplifier, the transistors are biased slightly above cutoff

to avoid crossover distortion

to get unusually high efficiency

to provide negative feedback

to get a low input impedance

Answer is:

to avoid crossover distortion

ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key

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45) There are not transients in pure resistive circuits because they

offer high resistance

obey Ohm's law

have no stored energy

are linear circuits

Answer is:

have no stored energy

46) Which of the following transistor amplifier configuration is used as a buffer for impedance matching

Common-emitter configuration

Common-base configuration

Common-collector configuration

none of the above

Answer is:

Common-collector configuration

47) An instrumentation amplifier has a high

output impedance

power gain

CMRR

supply voltage

Answer is:

CMRR

48) Typical expected life time of LED lights is

750 to 2000 hrs

6000 to 10000 hrs

20000 to 50000 hrs

More than 1000000 hrs

Answer is:

20000 to 50000 hrs

ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key

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44) In a class B push-pull amplifier, the transistors are biased slightly above cutoff

to avoid crossover distortion

ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key

Related ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key

45) There are not transients in pure resistive circuits because they

have no stored energy

46) Which of the following transistor amplifier configuration is used as a buffer for impedance matching

Common-collector configuration

47) An instrumentation amplifier has a high

CMRR

48) Typical expected life time of LED lights is

20000 to 50000 hrs

ISRO Technician-B Electronic Mechanic Question Paper - 2017 (Set - 1) with Answer Key