Module 4 B2 Module 4 B2 quiz contains 40 question based on the syllabus for module 4 examination for B2 category. The time limit for the quiz is 50 min. The number of attempts allowed are unlimited. All the best. Name 1. The value of induced emf is depend upon Angle between magnetic lines of force and rotor Both number of turns in winding & angle between magnetic lines of force and rotor Number of turns in winding None 2. An op amp has a voltage gain of 200,000. If the output voltage is 1 V, the input voltage is 10 V 2 μV 5 μV None 3. Solder with ____mm to ____ mm diameter can be used for PCB work 0.75mm-1mm 0.075mm-1mm 0.075mm-0.1mm 1mm-10mm None 4. The control element in an SCR is cathode anode gate None 5. What is the IC no. of OP-AMP IC741 IC 742 IC743 IC744 None 6. Operating point represents Zero signal values of IC and VCE Values of IC and VCE when signal is applied The magnitude of the signal None 7. The battery connections required to forward bias a pn junction are -ve terminal to p and -ve terminal to n -ve terminal to p and +ve terminal to n +ve terminal to p and -ve terminal to n None 8. With the reversal of the connections to the rotor of the transmitter of a torque synchro, the position of the receiver rotor will be Changed by 120º Changed by 180º Unchanged None 9. A transistor has Three pn junctions One pn junction Four pn junctions Two pn junctions None 10. Velocity feedback Prevents dead space errors Opposes the demand input Assists the demand input None 11. LED is made of Germanium Silicon gallium arsenide None 12. Synchronous is the name given to Electromechanical devices ALL Rotary devices Position sensing devices None 13. What is the ratio of tin & lead in soldering metal alloy 20% & 80% 10% & 90% 60% & 40% 50% & 50% None 14. A hole in a semiconductor is defined as the incomplete part of an electron pair bond a free proton a free electron a free neutron None 15. Servomechanism are classified on the basis of Construction of the open and close loop system Operation of the open and close loop system Information sampled at the output of the system for comparison with the input instructions None 16. The output impedance of a transistor is low zero high very low None 17. The output frequency of bridge wave rectifier is ………………….(fin=input frequency) 2fin 3fin fin 4fin None 18. When a servo has reached its null and stopped, the velocity feedback is Zero Maximum and anti-phase Maximum and in phase None 19. The resistivity of pure germanium under standard conditions is about 3 *10^6 ohm cm 6 *10^4 ohm cm 60 ohm cm None 20. If the input is a rectangular pulse, the output of an integrator is a Rectangular pulse Sine wave Ramp Square wave None 21. A synchro receiver has which of the following characteristics that is not found in any ordinary transformer? A step-up turns ratio A primary that can rotate in relation to the secondary A primary magnetically coupled to the secondary None 22. The emitter of a transistor is ........ doped moderately lightly heavily None 23. The operating point is also called the The maximum current point Cut off point Quiescent point None 24. Resistor wound on circular former is called Fixed resistor Variable resistor Toroidal resistor None 25. The most commonly used semiconductor is germanium silicon carbon None 26. In a nonlinear op-amp circuit, the Feedback loop is never opened Output shape is the same as the input shape Op amp may saturate Op amp never saturates None 27. Unbalance position of a torque synchro system is when The TX and TR rotors are same angle to each other The TX and TR rotors are parallel to each other The TX and TR rotors are 90º to each other None 28. An SCR has ............... semiconductor layers three two four None 29. The collector of a transistor is ........ doped heavily lightly moderately None 30. What are the two major components of synchro The rotor and the stator The housing and the stator The rotor and the shaft The housing and the shaft None 31. In an NPN transistor the collector is more positive than the emitter emitter is more positive than the collector emitter is more positive than the base None 32. In a pnp transistor, the current carriers are free electrons acceptor ions holes donor ions None 33. How does the stator of TX receive voltage By physical connection with the rotor By magnetic coupling with the another stator By a magnetic coupling with the rotor By a physical connection with the source None 34. The maximum efficiency of half wave rectification is 40.6% 100% 85.6% 81.2% None 35. A Common Collector circuit has the following characteristics Medium Voltage Gain, Low Current Gain, Inverted Output Medium Voltage Gain, High Current Gain, Non-Inverted Output Low Voltage Gain, High Current Gain, Inverted Output None 36. In semiconductor , the energy gap between valence and conduction bands is 15 eV 0eV 1eV 18 eV None 37. The SiO2 layer in an IC acts as Mechanical output An insulating layer A resistor None 38. The phase difference between the input and output voltages of a transistor connected in common collector arrangement is 270º 0º 180º 90º None 39. A Printed Circuit Board (PCB) is constructed of a plastic laminate which has bonded to one or both sides Various thicknesses of copper A thick sheet of copper A thin sheet of copper None 40. Addition of trivalent impurity to a semiconductor creates many valence electrons bound electrons holes free electrons None 1 out of 1
sunil.v.rawat 29/12/2022 at 9:56 PM Hi We like to keep it like a quiz so we don’t disclose the answers if you have doubts you can send a message I will reply back with your doubts Since I teach at an AME clc as well I hope you would have passed mod 4 this time
answer key please
Hi
We like to keep it like a quiz so we don’t disclose the answers
if you have doubts you can send a message I will reply back with your doubts Since I teach at an AME clc as well
I hope you would have passed mod 4 this time
Nice question