a) UJT b) CUJT c) PUT d) None of the above Ans: (c)
a) Toggle switches b) Relays c) Circuit breakers d) Fuses Ans: (a)
a) Toggle switches b) Relays c) Circuit breakers d) Fuses Ans: (b)
a) A.C. wave only b) Square wave only c) Sawtooth wave only d) Any of the above Ans: (d)
a) True b) False Ans: (b)
a) Vacuum diodes b) Vacuum tubes c) Vacuum diodes and tubes with no heaters d) Triodes e) Pentodes Ans: (c)
a) Zero b) Very small c) In range of 100 to 1000 ohms d) Very large Ans: (c)
a) Small b) Zero c) Of the order of 5 pf d) Very large Ans: (c)
a) Same slopes b) Completely different slopes c) Almost same slopes d) Positive and negative slope respectively Ans: (c)
a) Plate resistance b) Amplification factor c) Mutual conductance of triode d) Penetration factor Ans: (a)
a) Less than that of tetrode b) More than that of tetrode c) Equal to tetrode d) Zero Ans: (b)
a) Positive b) Negative c) Zero d) None of the above Ans: (b)
a) Dependent on the peak voltage of the plate b) Independent of the peak voltage of the plate c) Dependent on the cathode voltage d) None of the above Ans: (a)
a) 30 volts b) -30 volts c) 5 volts d) -5 volts e) -15volts Ans: (b)
a) Triode with high amplification factor b) Triode with medium amplification factor c) Tetrode with high amplification factor d) Tetrode with medium amplification factor Ans: (a)