AP ECET EEE 2016-6

1.An integrator op amp uses what element in the feedback path

A. Capacitor
B. Inductor
C. Resistor
D. Transistor

Answer : Capacitor
Explain:-

2.Upon what principle does a relaxation oscillator operate

A. Resistor in cascade
B. The charging and discharging of capacitor
C. The rectification process of diode
D. Switching transistors

Answer : The charging and discharging of capacitor
Explain:-

3.An oscillator is described by

A. Regenerative feedback
B. No feedback
C. An integrator and differentiator
D. Unity gain and zero phase shift around the feedback loop

Answer : Unity gain and zero phase shift around the feedback loop
Explain:-

4. The 2's compliment of the number of 1010101

A. 0101011
B. 0101010
C. 1101010
D. 1110011

Answer : 0101011
Explain:- Given Binary 1010101
1's Complement= 0101010 (Converting 0to1 and 1to0)
Add 1 to 1's Complement = 0101010+1
=0101011

5. The number of comparators in parallel conversion type 8 bit analog to digital converter Is

A. 8
B. 16
C. 255
D. 256

Answer : 255
Explain:-

6.What is the only input combination that will produce a high at the output of a five Input\nAND gate

A. At least one low input
B. At least one high input
C. All inputs should be low
D. All inputs should be high

Answer : All inputs should be high
Explain:-

7.What will be the state of Q and Q' after a flipflop has been reset

A. Q=0, Q'=1
B. Q=1, Q'=1
C. Q=1, Q'=0
D. Q=0, Q'=0

Answer : Q=0, Q'=1
Explain:-

8. Which statement is true for latching current

A. It is related to turn off process of the dovice
B. It is related to conduction process of device
C. It is related to turn on process of the device
D. It is related to conduct at full voltage level

Answer : It is related to turn on process of the device
Explain:-

9. Thyristor can be protected from over voltages by using

A. Voltage clamping device
B. Fuse
C. Heat sink
D. Snubber circuit

Answer : Voltage clamping device
Explain:-

10.UJT is known as

A. Voltage controlled device
B. Current controlled device
C. Relaxation oscillator
D. Wave generator

Answer : Voltage controlled device
Explain:-