Q1. BJT is a
(A) Current controlled device
(B) Voltage controlled device
(C) Both
(D) None
Answer: Current controlled device
Explanation:
Q2. The direction of rotation of a DC series motor can be reversed by
(A) interchanging supply terminals
(B) interchanging field terminals
(C) either interchanging supply terminals or interchanging field terminals
(D) none of these
Answer: interchanging field terminals
Explanation:
Q3. The essential condition for satisfactory parallel operation of two DC generators is that they should have same
(A) kW output rating
(B) drooping voltage characteristics
(C) percentage regulation
(D) speed of operation
Answer: drooping voltage characteristics
Explanation:
Q4. charge stores in:-
(A) Resistor
(B) capacitor
(C) Doide
(D) Transistor
Answer: capacitor
Explanation:
Q5. frequency is
(A) Time
(B) 1/2*Time
(C) 1/Time
(D) 2/3*Time
Answer: 1/Time
Explanation:
Q6. nand gate is combination of
(A) not and and
(B) not and or
(C) not
(D) or
Answer: not and and
Explanation:
Q7. Drift velocity of electrons is
(A) larger than speed of light
(B) almost equal to speed of light
(C) equal to speed of light
(D) very small in comparison to speed of light
Answer: very small in comparison to speed of light
Explanation:
Q8. If we consider two wires copper and aluminium of same length,which will have higher resistance
(A) Aluminium
(B) copper
(C) both
(D) undetermined
Answer: undetermined
Explanation:
Q9. When voltage applied across an electric iron is halved, the power consumption of the iron will reduce to
(A) Half
(B) 1/4th
(C) 1/2th
(D) None of the above
Answer: 1/4th
Explanation:
Q10. to convert infix notation to postfix notation which data structure is needed
(A) stack
(B) linear list
(C) queue
(D) dequeue
Answer: stack
Explanation:
Q11. Time delay relay in used in which relay type
(A) Magnetic relay
(B) Thermal relay
(C) Reed relay
(D) Latching relay
Answer: thermal relay
Explanation:
Q12. which are the universal gates
(A) xor
(B) and
(C) nor
(D) nand
Answer: nand
Explanation:
Q13. how many bits in one nibble
(A) 3
(B) 2
(C) 1
(D) 4
Answer: 4
Explanation:
Q14. which type of cable and name is used
(A) console and rs232
(B) serial and rs232
(C) console and rs240
(D) serial and rs240
Answer: console and rs232
Explanation:
Q15. what is the reciprocal of resistance
(A) conductance
(B) inductance
(C) reluctance
(D) capacitance
Answer: conductance
Explanation:
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