Q.406 The 8051 micro-controller is of
A. 8 bit
B. 16 bit
C. 4 bit
D. 32 bit
Ans.: B
Q.407 The snubber circuit is used in Power Electronic-
To reduce high di/dt
B. To reduce high dv/dt
C. To reduce losses in circuit
D. none of the above
Ans.: B
Q.408 IC 555 can be used in
A. Astable mode
B. Bistable mode
C. Monostable mode
D. All of the above
Ans.: D
Q.409 To reduce the error in digital circuits the following component is required
A. Isolation transformer
B. Antialiasing filter
C. Sample and Hold circuit
D. ADC
Ans.: B
Q.410 Zener diode is always used for
A. Constant voltage
B. Constant current
C. Both A and B
D. None of the above
Ans.: A
Q.411 For flexibility in operation in industry which drive is suitable?
A. Individual drive
B. Group drive
C. Both A and B
D. Only D.C drive
Ans.: A
Q.412 In Transmission line which conductors are used
A. Copper
B. All aluminium
C. ACSR
D. None of the above
Ans.: C
Q.413 Which one is used as basic processor for Pentium computer?
A. 8051
B. 8086
C. 8085
D. None of the above
Ans.: B
Q.414 The 8051 micro-controller is not designed for
A. Rigorous calculation
B. More input-output port
C. More instruction set
D. None of the above
Ans.: A
Q.415 Supply is not given in Traction system in main line during
A. Acceleration
B. Retardation
C. Coasting
D. Free run
Ans.: C
Q.416 The standard impulse wave can be defined as
A. 1/50 µs
B. 1.2/25 µs
C. 1/25 µs
D. 1.2/50 µs
Ans.: D
Q.417 In HVDC transmission can be used due to
A. Asymmetrical link
B. Transmit bulk power at long distance
C. Reduce conductor material
D. All of above
Ans.: D
Q.418 In Restructured power system
A. Generation, Transmission and Distribution as single utility
B. Generation only single utility
C. Distribution only single utility
D. None of above
Ans.:D
Q.419 The following test is carried out in each machine before put in to service
A. Breakdown test
B. Commissioning test
C. Double frequency double voltage
D. all of the above
Ans.: B
Q.420 For high voltage generation method can be implemented-
A. Voltage double circuit
B. Cascade transformer
C. Both A and B
D. Neither of A and B
Ans.: C
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