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.

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

31) In an FET, when drain voltage equals the pinch-off voltage, then drain current _____ with the increase in drain voltage.

32) HCF of 12, 18 and 24 is

33) The OP-amp can amplify