Download ipe question bank - E

UNIT - I
1. The Full Wave Circuits Are commonly called as ___________ circuits.
(1) static (2) Bridge (3) combensation(4) small
2. During the positive half cycle,current rises from_________
(1) one (2) two (3) Zero (4) two
3. ________ are used to transfer energy from DC to AC.
(1) cycloconvertor (2) circuits (3)convertor (4) convertor
4. Inverters can be classified into _____ categories.
(1) zero (2) one (3) Two (4) three
5. _________ is one of the good features of chopper drives.
(1) large size (2) Smooth Control (3)Smooth Control (4) Smooth Control
6. The ________ frequency has fast response.
(1) Constant (2) large (3) small (4)minimum
7. The cycloconverter is basically a _________ arrangement.
(1) large (2) resistive (3) assending (4)switching
8. The distortion increases if the ratio of the output and input frequency________
(1) constant (2) Increases (3) stable(4) decrease
9. A__________ Switch is required to disconnect the faulty part.
(1) long (2) dynamic (3) Static (4)short
10. The choice of battery is governed by __________ main factors.
(1) zero (2) one (3) three (4) Two
11. For under water power transmission,It is economical to link two AC systems by _________
transmission line.
(1) VDDC (2) HLDC (3) HVDC (4)LVDC
12. Each converter would be ______ pulse.
(1) 12 (2) 6 (3) 5 (4) 4
13. ______ are used for making and breaking a circuit.
(1) SSR’s (2) SVR’s (3) SCR’s (4) DCR
14 The maximum time delay for breaking the circuit is________half cycle. (a)(b)(c)(d)
(1) three (2) One (3) zero (4) two
15 Thyristor current limiting circuit breaker will provide _________ functions.
(1) positive (2) negative (3) protective(4) small
16 The thyristor ratings determine the amount of _________power that can be switched.
(1) small (2) load (3) error (4) zero
17._________ switch may be substituted for SCR2,to turn off SCR1 in Dc static switch.
(1) dynamical (2) vertical (3) electrical(4) Mechanical
18 The current through the load will decrease to _______ in an exponential fashion.
(1) five (2) two (3) one (4) Zero
19 PUT stands for _______
(1) Programmable uni junction transient(2) Pollar uni junction transistor (3)Programmable uni
junction transistor (4) Programmable uni jungle transistor
20 The time delay circuit depends on ________ constant.
(1) current (2) Time (3) frequency (4)voltage
21 The speed of single phase motor can be controlled by controlling the ____ value of input
voltage.
(1) r.v.s (2) c.m.s (3) r.m.s (4) r.m.rs
22 In fan regulator using triac,if R is low,the firing will be ________
(1) large (2) r.m.s (3) constant (4)Small
23 For the applications of traffic lights _________ circuits are used.
(1) error (2) light (3) fan (4) Flasher
24 The R-C combination is often referred to as _________Circuit.
(1) Snubber (2) snooper (3) rubber(4) snabber
25 ___________ radiations are generated by the sudden collapse of the electric field caused by
SCR.
(1) magnetical (2) Electromagnetic(3) electrical (4) large
SECTION - B
1. Write the principle of single phase inverter
2. What is meant by cylo converter
3. Explain HVDC?
4. What are advantages of UPS
5. Explain Battery Charging Circuit?
SECTION - C
1. Draw the over current protection circuit using thyristor and explain it
2. Draw the over voltage protection circuit using thyristor and explain it
3. How the fan regulator works using TRIAC?
4. How SCR helps to current limiting circuit breaker
UNIT - II
1
Resistance welding is the process of fusing two or more ___________ pieces.
(1) voltage (2) Metal (3) current (4)mirror
2
The line contactor may be a magnetically ___________ contactor.
(1) vertical (2) small size (3) eliminate(4) Controlled
3
The electrode tips are __________ colled.
(1) Water (2) hot (3) ion (4) dirty
4
Spot welding is done by____________two or more pieces of metal in the form of sheets
togtether between two pointed electrodes.
(1) drimming (2) cliping (3) clamping(4) fixing
5
In butt welding,one bar is held in a fixed clamp and other is held in __________ clamp.
(1) fixing (2) no (3) Moving (4)voltage
6
In ignitron contactor connects the welding transformer primary to the AC supply for
intervals controlled by the ___________signals from control circuits.
(1) uncontrol (2) current (3) voltage (4)Control
7
In Non-synchronous weld timer control the conduction to the nearest integral number
of_________
(1) Cycles (2) positive cycles (3)negative cycles (4) error cycles
8
A good weld depends not only upon the duration but also upon the magnitude of the
__________current.
(1) dust (2) error (3) Weld (4) small
9
Sequence timer is meant the electronic circuit which controls the ____________ sequence.
(1) dump (2) Welding (3) undamed(4) damed
10 Sequence timer using __________time delay circuits.
(1) three (2) two (3) Four (4) one
11 A three phase ignitron rectifier supplies _________ current.
(1) AC (2) DC (3) small (4) large
12 The welding transformer used in resistance welding will___________
(1) Step up current (2) step up voltage (3) step down current (4) step down voltage
13 Induction heating is employed for electrically ___________material.
(1) large (2) dynamic (3) Conductive(4) magnetic
14 Skin effect is the tendancy of the induced heating currents to concentrate near the surface
of the __________
(1) resistor (2) insulator (3) inductor(4) Conductor
15 In synchronous welding control,the welding current begins at___________
(1) voltage (2) Power factor angle(3) current (4) large value
16 A digital timer in a resistance welding machines provides_________
(1) voltage (2) Accurate timing (3)current (4) oscillations
17 In resistance welding,aluminium as compare to steel,requires_________
(1) large time (2) large voltage (3)Smaller welding time (4) large power
18 A metal bar may be heated electronically by ____________
(1) power (2) Induction heating (3)dielectric heating (4) resistor
19 A rod of mild steel kept inside a coil carrying high frequency currents gets heated due to
_________
(1) error (2) dielectric heating (3)Induction heating (4) large voltage
20 In induction heating ,the oscillator tube operates as __________
(1) Class B (2) Class E (3) Class C (4)Class F
21 If frequency of current in copper is increased from 200 MHz to 800 MHz ,the skin depth of
penetration would become__________
(1) Two fold (2) Three fold (3) One fold (4) Four fold
22 A freshly painted layer may be dried electronically by________
(1) Heating (2) Dielectric heating (3)Cooling (4) water
23 In dielectric heating ,if the capacitor is loss-free, the heat produced will be_________
(1) one (2) four (3) Zero (4) two
24 The power density generated in dielectric heating is not propotional to___________
(1) resistance (2) inductance (3)insulator (4) Capacitance
25 In dielectric heating,non uniform heating__________
(1) Occurs for low frequencies (2)Occurs for higher frequencies (3)Occurs for noise
frequencies (4) Occurs for burst frequencies
SECTION - B
1. Explain welding
2. Define Synchronous weld timer
3. Explain Resistance welding
4. Define Induction Heating
5. List out the applications of inductor heating
SECTION - C
1. Explain about types of Resistance welding in detail with diagram
2. What are the uses of sequence timer?
3. Explain about energy storage welding in detail.
UNIT - III
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6
Sound wave with frequency less than audible limit are called_________
(1) inductance (2) resistance (3)insulator (4) Infrasonics
The upper limit of frequency produced by piezo-electric quartz vibrator is about_________
(1) 150 MHz (2) 50 MHz (3) 250 MHz(4) 350 MHz
Ultrasonic wave have frequency_____________
(1) 30KHz (2) 130KHz (3) 20KHz or above (4) 40KHz
Ultrasonic flaw detection for detect in material is______________
(1) Cheap (2) Costly (3) large (4)40KHz
Soldering of aluminium is achieved by_____________
(1) infrasonic (2) undersonic (3) upper sonic (4) Ultrasonic radiation
Plastic materials can be welded by_______________
(1) infrasonic (2) undersonic (3)Ultrasonic radiation (4) upper sonic
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Ultrasonic radiation in a liquid results in appreciable rise in __________of the liquid.
(1) current (2) voltage (3) damping (4)temperature
X-Rays are propagated in _____________lines.
(1) circle (2) Straight (3) triangle (4)square
Which of following devices cannot be used to measure pressure?
(1) LVDT (2) strain gauge (3)Pyrometer (4) pirani gauge
Load cell essentially is a _____________
(1) strain gauge (2) low voltage (3)minimum gauge (4) large gauge
A differential transformer is a _____________
11 (1) Variable voltage transducer (2)Variable inductance transducer (3)Variable current
transducer (4) Variable inductance
12
In radioactive method,the receiver measures level by recording__________
(1) current (2) voltage (3) resistance(4) The time taken by the rays to reach the receive
Thermistors have___________
13
(1) High temperature co-efficient (2)High and negative temperature coefficient (3) negative temperature co-efficient (4) High and positive temperature coefficient
14
A flow measuring system with a square – root extractor has________________
(1) small scale (2) large scale (3)Linear scale (4) minimum scale
The pH value of a solution is defined as ________________
15 (1) -log(H-ion concentration (2)+log(H+ion concentration (3) -log(H+ion
concentration (4) log(Hion concentration
16
Piezo-electric crystal can be used to measure___________
(1) Decceleration (2) Acceleration (3)celeration (4) Accele
17 The pressure exerted by the fluid per unit area of the wall of the container
called__________
(1) Absolute pressure (2) pressure(3) Ambient pressure (4) Absolute voltage
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19
The difference between absolute and local atmospheric pressure called____________
(1) Gauge pressure (2) high pressure(3) low pressure (4) error
When Gauge pressure is negative ,its known as _________
(1) resistance (2) Vacuum (3) diode(4) capacitance
The displacement is created by the action of force summing device ,is converted into some
20 ______________signal.
(1) dynamical (2) Electrical (3)mechanical (4) statical
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23
Fluid flow measurement are classified into ___________method.
(1) two (2) one (3) four (4) Five
Temperature measurement determine the amount of __________
(1) Temperature (2) pressure (3)current (4) voltage
Sound of frequency below 20Hz is called _______________
(1) Audio sounds (2) Ultrasonic (3)Infrasonic (4) sonic
The resistive of an strain gauge___________
24 (1) Is based on the weight (2) Is usually no more than 100 ohms (3) Is based on the gauge
factor,but is typically less than an ohm (4) Is usually more than 100 ohms
25
The output voltage of a typical thermocouple is _________
(1) 100mv (2) above 100mv (3) Less than 100 mv (4) above 200mv
SECTION - B
1. List out the applications of ultrasonic waves
2. Explain the advantages of Displacement measurement
3. How the flow measurements can be done?
4. What is meant by level measurement?
5. Define the measurement of thickness
SECTION - C
1. Explain the operations of production of X-Rays
2. Explain pressure measurement
3. Explain the applications of ultrasonic
4. Describe the working principles of Displacement measurement
UNIT - IV
1
Quenching is the rapid cooling of a workpiece to obtain certain material _______________
(1) current (2) voltage (3) properties(4) velocity
2
Quenching prevents _______________temperature processes.
(1) high (2) abnormal (3) normal (4)low
3
Quenching can reduce crystallinity and thereby increase toughness of both alloys and
________
(1) plastics (2) metal (3) silver (4)gold
4
Quench hardening is a _________process
(1) metal (2) mechanical (3) electrical(4) electromechanical
5
Quenching metals is a progression; the first step is____________.
(1) cooling (2) heating (3) remooving(4) selecting
6
Pressure-controlled cycling is based on an applied ___________pressure
(1) negative (2) zero (3) positive (4)five
7
In pressure-controlled modes, the total volume is ___________
(1) variable (2) positive (3) negative(4) Zero
8
A checkweigher is an automatic or manual machine for checking the___________
(1) temperature (2) hight (3) resistance(4) weight
9
An automatic checkweigher incorporates a series of conveyor belts. These checkweighers
are known also as __________weighers
(1) check (2) belt (3) select (4) reject
10 high-speed precision scales, a load cell using ________________force restoration.
(1) electro (2) magneto (3)electromagnetic (4) resisto
11 Most modern checkweighers are therefore equipped with ____________ports.
(1) large (2) communications (3)small (4) various
12 A humidor is any kind of box or room with constant __________
(1) humidity (2) communication (3)voltage (4) sine wave
13 The ideal humidity in a humidor is around_______________of relative humidity.
(1) 68-72% (2) 66-74% (3) 63-72%(4) 68-75%
14 All humidors contain a ______________system.
(1) amplifiying (2) detecting (3) filltering(4) humidifying
15 Historic textile collections can largely be divided into ________categories.
(1) three (2) four (3) five (4) two
16 Light can have a variety of effects on textiles over____________.
(1) frequency (2) time (3) voltage (4)current
17 Quenching metals is a progression, Second step________________.
(1) Mixing (2) deviding (3) soaking (4)separating
18 Quenching metals is a progression; the first step is heating, i.e. heating it to the required
____________
(1) temperature (2) diode (3) cooling(4) resistance
19 high-speed precision scales, a ___________using electromagnetic force restoration.
(1) rod cell (2) large cell (3) load cell(4) diode
20 Quenching can reduce _____________
(1) crystallinity (2) resistance (3)temperature (4) humidity
21 Pressure-controlled cycling is based on an applied positive ________
(1) temperature (2) wave (3) Pressure(4) linkage
22 A thermistor is a type of ________________
(1) diode (2) resistor (3) capacitor (4)inductor
23 Thermistors are widely used as inrush ___limiters.
(1) voltage (2) current (3) capacitance(4) resistance
24 Thermistors differ from resistance temperature _________
(1) resistor (2) capacitor (3) detector(4) diode
25 In Thermistors,the resistance increases with ____________temperature, and the device is
called a positive temperature coefficient
(1) increasing (2) reducing (3)decreasing (4) reject
SECTION - B
1. What is meant by thermistor control of quench oil temperature?
2. Write the mode of pressure control system
3. How the strip tension controller works?
4. Explain automatic weighing system
5. How the relative humidity is controlled in textile moistening process?
SECTION - C
1. Explain the operation of warehouse humidity controller
2. Describe any two applications in industrial systems
3. What are the advantages of automatic weighing system?
UNIT - V
1
A new technology has evolved from innovations in automated manufacturing,Its called
_____________
(1) mechanical (2) nano (3) Industrial robotics (4) electronics
2
Robots are not necessarily faster than _____________
(1) Humans (2) current (3) computer(4) voltage
3
Robots can be used to boost industrial _______________
(1) inductivity (2) activity (3)Productivity (4) conductivity
4
A Robot system consist of ______________major components.
(1) four (2) Three (3) two (4) five
5
The manipulator is a_________________ unit.
(1) electrical (2) dynamical (3)electromechanical (4) Mechanical
6
Actuator can be mounted ________________at each joint.
(1) infinitely (2) Directly (3) indirectly(4) finitely
7
The controller functions as memory by storing the necessary positioning and
_____________________.
(1) data (2) primary data (3)sequence data (4) secondary data
8
Hydraulic units are considered faster than__________________
(1) mechanic unit (2) Electric unit (3)amplifier unit (4) driver unit
9
Robots are often classed into______________major categories.
(1) three (2) one (3) five (4) Two
10 The Non-Servo robot is considered ________________robot.
(1) Non-Intelligent (2) intelligent (3)closed (4) open
11 Servo robots are classified either intelligent or ______________ intelligent.
(1) poor (2) worst (3) Highly (4) better
12 The controller begins to move the robot through its various steps of ___________
(1) two (2) Sequence (3) three (4)four
13 The Non-Servo robot is an ____________loop system.
(1) closed (2) Open (3) sequence (4)large
14 The Servo robot is an ____________loop system.
(1) open (2) minimum (3) sequence (4)Closed
15 A servomechanism is a control system used to detect and correct___________
(1) power (2) voltage (3) current (4)Errors
16 The jointed arm robotic system configuration is the most __________ configuration.
(1) private (2) important (3) Common(4) inefficient
17 The cylindrical robotic system consist of ____________slides.
(1) three (2) Two (3) four (4) one
18 The cylindrical robotic system mounted on ____________base.
(1) circular (2) triangular (3) verticle(4) Rotary
19 The three degrees of freedom located in the __________ of a robotic system.
(1) Arm (2) neck (3) shoulder (4) teeth
20 In motions of robotic system end effector moves to sequence of___________
(1) steps (2) arrangement (3) Points(4) noise
21 point to point motion involve the movement of robotic system through a number of
_____________points.
(1) Discrete (2) laplace (3) integral(4) differentiate
22 Continuous path motion is an extension of _____________method.
(1) Point-to-point (2) fixed point (3)moving point (4) integral point
23 Proximity sensing is used to determine if an object is ___________
(1) absent (2) mixing (3) colapsed (4)Present
24 The most basic type of control system is referred to as an ___________loop system.
(1) closed (2) Open (3) dynamic (4)static
25 Both full and partial control can be achieved through a ___________loop system.
(1) open (2) automatic (3) closed (4)control
SECTION - B
1. Explain robotic system configuration
2. Write about microprocessor based measurement of physical quantities
3. Explain types of robotic system
4. What are the mechanical parts are there in robotic system?
5. How the sensor is used in robotic systems?
SECTION - C
1. Explain programming of robotic system and motions of robotic system
2. Explain microprocessor based speed control of DC motor
3. How microprocessor helps in water level indicator? and explain its operation