B:-Only by the negative half cycle of the supply
C:-By positive & negative cycle of the supply
D:-None of the above
Correct Answer:- Option-C
Question59:-The procedure used for controlling the speed of a 3 phase induction motor is
A:-Fixed voltage -variable frequency method
B:-variable voltage -fixed frequency method
C:-variable voltage -variable frequency method
D:-Fixed voltage -fixed frequency method
Correct Answer:- Option-C
Question60:-The purpose of the synchronizing control in a CRO is to
A:-Focus the spot on screen
B:-Adjust the amplitude of the display
C:-Control the intensity of spot
D:-Lock the display of the signal
Correct Answer:- Option-D
Question61:-Which is the necessary condition for generating sinusoidal voltage in a feedback type oscillator
A:-Total loop gain should be one
B:-Total phase shift should be 360° or 0°
C:-Either A or B
D:-Both A and B
Correct Answer:- Option-D
Question62:-The largest number that can be represented by 'n' bits is

(:- 27 (1-1)
0: 2551)”
Correct Answer:- Option-A
Question63:-The binary equivalent of the Hexadecimal number *(18)_(16) is*
A:-00010010b
B:-00010011b
C:-10000010b
D:-00011000b
Correct Answer:- Option-D
Question64:-The output of a logic gate is "1" when all its inputs are at logic "0", the gate is
A:-A NOR or an EX-OR gate
B:-A NAND or OR gate
C:-An AND or an EX-NOR gate
D:-None of above
Correct Answer:- Option-D
Question65:-If a mod 9 counter is constructed using 4 flip flops the counter will skip
A:-7 Counts
B:-8 Counts
C:-9 Counts
D:-none of the above
Correct Answer:- Option-A
Question66:-The two input OR gate is
A:-7400
B:-7483
C:-7432
D:-7423
Correct Answer:- Option-C
Question67:-Which of the following statement about RAM is not correct
A:-It stands for Random Access Memory
B:-It is R/W memory
C:-It is volatile memory
D:-The data's are entered or stored in the chip during manufacturing
Correct Answer:- Option-D
Question68:-The PIV of diode in a half wave rectifier circuit with shunt capacitor filter is