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

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

26) Which of the following is decade counter?

Answer is:

7490/IC 7490

27) Assume that a 4-bit serial in /serial out shift register is initially clear. Bits are shifted in from left. We wish to store the nibble 1100. What will be the 4-bit pattern after the second clock pulse? (Right-most bit first)

Answer is:

0000

28) Primary winding of a transformer

Answer is:

can be either low voltage winding or high voltage winding

29) A 12 V battery is rated at 48 AH. If it must deliver an average of 2.0 A, how long will the battery last before it needs recharging.

Answer is:

24 hrs

30) An AM receiver is tuned to 855 kHz. If IF is 455 kHz, what is the local oscillator frequency?

Answer is:

1310 kHz

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