Surface Mount Technology Question & Answers August 25, 2022 By WatElectronics This article lists 75 Surface Mount Technology MCQs for engineering students. All the Surface Mount TechnologyQuestions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Surface Mount Technology. Most electronics nowadays are manufactured using SMT (Surface Mount Technology). It is advantageous because the production is automated as well as soldering. The devices made from SMT are efficient & economical. Electrical components are mounted on PCB (Printed Circuit Board) directly in Surface Mount Technology. The mounted component through this technology is known as a Surface Mounted Device. This method is a replacement for Through Hole Technology. Initially in industries, components are fitted using the method of construction known as Through Hole Technology. The demand for SMT is increased because SMTs increase automation manufacturing and leads to reduced cost with improved quality. More components are accommodated in the lesser area by using SMTs. Based on the requirement and suitability both of these technologies are used. Large transformers and Power semiconductors i.e., heat sinks are not suitable for Surface mounting. 1). What is the technology used to mount the components directly on board? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint 2). Electrical component mounted using SMT is known as ______? Surface-Mount Device Surface-Movement Device Surface-Manufacturing Device Sensor-Mount Device None Hint 3). Solder joint in Surface Mount Technology forms ________? Electrical Connection Mechanical Connection Chemical Connection a & b None Hint 4). What is not used to connect in Surface Mount Technology? Holes Terminals a & b Surfaces None Hint 5). How the components using Surface Mount Technology are aligned? Closer Far Distant Out of the Way None Hint 6). Why Surface Mount Technology is beneficial over Through Hole Technology? More Components Placed Together Compact Design Lightweight All Mentioned Above None Hint 7). How is the setup of production in Surface Mount technology? Slow Lesser Speed Fast Time Consuming None Hint 8). Planar Mounting is _______? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint 9). Surface Mount Technologies achieve _______? High Densities Low Densities Lower Circuit Density b & c None Hint 10). Fiducial pads are required in _____? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint 11). Two-sided assembling is common in _________? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint 12). Electronic component of SMD doesn’t have _______? Leads Solderable Pins Ball Grid Array Surfaces None Hint 13). _________ provides better performance? Through Hole Components Surface Mount Components Electrical Components Active Components None Hint 14). What are various Surface Mount Resistors? Thick Film Thin Film a & b Broad Film None Hint 15). What replaced Discrete resistors? Surface Mount Resistor Networks R-packs a & b Surface Movement Resistors None Hint Surface Mount Technology MCQs for Interviews 16). Surface Mount Capacitors utilized for __________? Decoupling Applications Frequency Control a & b Gain Control None Hint 17). What is the dielectric for the capacitors manufactured from Surface Mount Technology? Ceramic Tantalum Either a or b Aluminum None Hint 18). What type of Surface Mount Capacitors offer higher Volumetric efficiencies? Surface Mount Tantalum Capacitors Surface Mount Aluminum Capacitors Surface Mount Ceramic Capacitors Surface Mount Germanium Capacitors None Hint 19). How are Surface Mount Devices desoldered? Soldering Iron Solder Wire Hot Air Blower Solder Paste None Hint 20). What are the various types of Surface Mounting? Type-1 Type-2 Type-3 All Mentioned Above None Hint 21). Which type of Surface Mount Technology consists of Discrete components only? Type-1 Type-2 Type-3 All Mentioned Above None Hint 22). In type 3, the Surface Mount Components are glued at ______? Top Side Bottom Side Both Sides None None Hint 23). Type 2, assembly is the combination of _____? Type-1 Type-3 a & b Discrete Components None Hint 24). Assembling in type 1 SMT is ______? Single Sided Double Sided Either a or b Multiple Sides None Hint 25). In type 2 SMT ________ doesn’t present on bottom? Passive Surface Mount Devices Active Surface Mount Devices Surface Mount Capacitors Surface Mount Resistors None Hint Read More about SMD Resistor 26). What increases the complexity of SMT assembling? Large Fine Pitch Ultra Fine Pitch Quad Flat Pack All Mentioned Above None Hint 27). How are Surface Mounted Technology based components mounted in a bulky fashion? Soldering Iron Solder Wire Hot Air Blower Wave Soldering Machine None Hint 28). What is used to clean Electronic assemblies? Petrol Nitrogen Water Isopropyl Alcohol None Hint 29). Why PCB assembly has conformal coating? Protect from Moisture Protect from Contamination Protect from Withstanding Voltages a & b None Hint 30). What solvent can be used in cleaning PCB? Petrol Nitrogen Water Isopropyl Alcohol None Hint 31). What is four side lead surface mount device? LCCC (Leadless Ceramic Chip Carriers) DIP (Dual In-Line Package) Plastic Lead Chip Carrier b & c None Hint 32). Where we can use LCCC (Leadless Ceramic Chip Carriers)? Education Automation Military Commercial None Hint 33). What are the various Surface Mount Technology Devices? LCCC (Leadless Ceramic Chip Carriers) DIP (Dual In-Line Package) Plastic Lead Chip Carrier All Mentioned Above None Hint 34). Devices manufacture using Surface Mount Technology must be _______? Use Transistor Outline for Connection Parallel Connectivity of Pins Mount Directly Require Holes None Hint 35). On a single PCB can we make use of both Surface Mount Technology & Through Hole Technology? Yes No Only SMTs Only Through Hole Technology None Hint 36). Which technology offers a higher density of components? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint 37). What are the various soldering or desoldering methods in Surface Mount Technology? Infrared Soldering Soldering with Hot Gas a & b Soldering with Iron None Hint 38). What is Hot Gas used in soldering of SMT? Air Inert Gas Carbon Dioxide a & b None Hint 39). What type of soldering methods affect the Peripheral area? Infrared Soldering Soldering with Hot Gas a & b Soldering with Iron None Hint 40). What are the various advantages of IR soldering in SMTs? Easy to Setup Not Required Compressed Air Faster Reaction All Mentioned Above None Hint 41). Control of temperature is not/less precise in ________ soldering of SMT? Infrared Soldering Soldering with Hot Gas a & b Soldering with Iron None Hint 42). What are the drawbacks of IR soldering in SMT? Less Temperature Control Central Areas are Subjected to Heat Temperature Dependent on Surface Shapes All Mentioned Above None Hint 43). The systems are allowed to under switching between nitrogen and air in __________? Infrared Soldering Soldering with Hot Gas a & b Soldering with Iron None Hint 44). The component's temperature in Hot Air soldering will not exceed _____? Adjusted Gas Temperature Existing Temperature Room Temperature Body Temperature None Hint 45). What type of soldering offers a large quantity of Heat to be transferred? Infrared Soldering Soldering with Hot Gas a & b Soldering with Iron None Hint 46). After reflow rapid cooling offered by _________? Infrared Soldering Soldering with Hot Gas a & b Soldering with Iron None Hint 47). Reflow of atmosphere is possible in _________? Infrared Soldering Soldering with Hot Gas a & b Soldering with Iron None Hint 48). What is the downside of the Hot Air Soldering methodology? Central Area gets Affected Temperature Dependent on Surface Shape Thermal Capacity Leads to Slow Reaction No Reflow of Atmosphere None Hint 49). What is the major advantage of using SMT? Use of Leadless or Leaded Components Low Power Consumed Reduced Heat Dissipated All Mentioned Above None Hint 50). SMD Components _________ in size compared to through-hole technology? 50% 60-80% 70-80% 80-90% None Hint Surface Mount Technology MCQs for Students 51). Weight of the components made from Surface Mount Technology is ___? Less More High Large None Hint 52). What technology offers high rates of flexibility? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint 53). Rigid-flex PCBs are made possible because of _______? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint 54). Surface Mount Technology offers great flexibility on basis of _____? PCB Material PCB Design PCB Manufacture a & b None Hint 55). Manufacturing cost of SMT PCBs is _____? Less More High Large None Hint 56). Surface Mount Technology has reduced __________? Board Size Material Cost Frequency a & b None Hint 57). How the components are mounted in Surface Mount Technology? Desoldering Layering Channeling SMT Pick & Place Machine None Hint 58). What reduces production & processing costs in Surface Mount Technologies? Desoldering Layering Channeling SMT Pick & Place Machine None Hint 59). SMT offers higher densities on _______? Single Sided PCB Double Sided PCB Multilayer PCB b & c None Hint 60). SMT based PCBs offers _______? High Speed Signal Transmission Reduced RF Interference Low Speed Signal Transmission a & b None Hint 61). The components of Surface Mount Technologies have _____? No Leads Shorter Leads Large Leads a & b None Hint 62). What reduces RF interference in devices manufactured using SMTs? No Leads Shorter Leads Large Leads a & b None Hint 63). Surface Mount Technology-based PCB assembly offers ______ for vibration? More Resistance Less Resistance Small Resistance Minimum Resistance None Hint 64). Huge Investment is required by ______technology? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint 65). SMT inspection equipments are __________? Less Costly Expensive Less Expensive Least Cost None Hint 66). Clean room environment require for ______? Through-Hole Technology Surface-Mount Technology Sensor-Mount Technology Surface-Movement Technology None Hint Surface Mount Technology MCQs for Quiz 67). What is the power requirement of SMT-based components? Less More High Large None Hint 68). What kind of components are available in Surface Mount Technology? Active Passive a & b Other than Electric None Hint 69). What are the drawbacks of Surface Mount Technologies? Equipment is Expensive Prone to Damage Small Volume Production is Expensive All Mentioned Above None Hint 70). What are the add-ons to using Surface Mount Technologies? Automated Assembly Increased Component Density Minimal Footprint of PCB All Mentioned Above None Hint 71). What are the basic advantages of using Surface Mount Technology? Smaller Size Larger Size Reduced Weight a & c None Hint 72). Surface Mount Technology has reduced by _________? Parasitic Inductance Parasitic Capacitance a & b Parasitic Resistance None Hint 73). Why Surface Mount Technology is preferred? Smaller Size Shorter Internal Leads Smaller Board Layouts All Mentioned Above None Hint 74). What are the difficulties faced due to Surface Mount Technology? Manufacturing Rework Repair All Mentioned Above None Hint 75). Why Surface Mount Technology is used? To Mount Electronic Components To Insert Electronic Components Through Holes Components Inserted a & b None Hint Please fill in the comment box below. Time's up
