McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 251. |
Which command of an LCD is used to shift the entire display to the right? |
| A. | 0x1c |
| B. | 0x18 |
| C. | 0x05 |
| D. | 0x07 |
| Answer» A. 0x1c | |
| 252. |
Which command is used to select the 2 lines and 5*7 matrix of an LCD? |
| A. | 0x01 |
| B. | 0x06 |
| C. | 0x0e |
| D. | 0x38 |
| Answer» D. 0x38 | |
| 253. |
Which of the following step/s is/are correct for sending data to an LCD? |
| A. | set the r/w bit |
| B. | set the e bit |
| C. | set the rs bit |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 254. |
Which of the following step/s is/are correct to perform reading operation from an LCD? |
| A. | low to high pulse at e pin |
| B. | r/w pin is set high |
| C. | low to high pulse at e pin & r/w pin is set high |
| D. | none of the mentioned |
| Answer» C. low to high pulse at e pin & r/w pin is set high | |
| 255. |
Which instruction is used to select the first row first column of an LCD? |
| A. | 0x08 |
| B. | 0x0c |
| C. | 0x80 |
| D. | 0xc0 |
| Answer» C. 0x80 | |
| 256. |
The RS pin is for an LCD. |
| A. | input |
| B. | output |
| C. | input & output |
| D. | none of the mentioned |
| Answer» A. input | |
| 257. |
A thermistor is a |
| A. | sensor |
| B. | adc |
| C. | transducer |
| D. | micro controller |
| Answer» C. transducer | |
| 258. |
What is the difference between LM 34 and LM 35 sensors? |
| A. | one is a sensor and the other is a transducer |
| B. | one’s output voltage corresponds to the fahrenheit temperature and the other corresponds to the celsius temperature |
| C. | one is of low precision and the other is of higher precision |
| D. | one requires external calibration and the other doesn’t require it |
| Answer» B. one’s output voltage corresponds to the fahrenheit temperature and the other corresponds to the celsius temperature | |
| 259. |
An electronic device which converts physical quantity or energy from one form to another is called |
| A. | sensor |
| B. | transistor |
| C. | transducer |
| D. | thyristor |
| Answer» C. transducer | |
| 260. |
What is signal conditioning? |
| A. | to analyse any signal |
| B. | conversion or modification is referred to as conditioning |
| C. | conversion from analog to digital is signal conditioning |
| D. | conversion from digital to analog is signal conditioning |
| Answer» B. conversion or modification is referred to as conditioning | |
| 261. |
What steps have to be followed for interfacing a sensor to a microcontroller 8051? |
| A. | make the appropriate connections with the controller, adc conversion, analyse the results |
| B. | interface sensor with adc and adc with 8051 |
| C. | interface sensor with the max232, send now to microcontroller, analyse the results |
| D. | none of the mentioned |
| Answer» B. interface sensor with adc and adc with 8051 | |
| 262. |
Why Vref is set of ADC0848 to 2.56 V if analog input is connected to the LM35? |
| A. | to set the step size of the sampled input |
| B. | to set the ground for the chip |
| C. | to provide supply to the chip |
| D. | all of the mentioned |
| Answer» A. to set the step size of the sampled input | |
| 263. |
A variable reluctance stepper motor is constructed of material with salient poles. |
| A. | paramagnetic |
| B. | ferromagnetic |
| C. | diamagnetic |
| D. | non-magnetic |
| Answer» B. ferromagnetic | |
| 264. |
A stepper motor having a resolution of 300 steps/rev and running at 2400 rpm has a pulse rate of- pps. |
| A. | 4000 |
| B. | 8000 |
| C. | 6000 |
| D. | 10,000 |
| Answer» C. 6000 | |
| 265. |
If a hybrid stepper motor has a rotor pitch of 36º and a step angle of 9º, the number of its phases must be |
| A. | 4 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» A. 4 | |
| 266. |
The rotor of a stepper motor has no |
| A. | windings |
| B. | commutator |
| C. | brushes |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 267. |
The rotational speed of a given stepper motor is determined solely by the |
| A. | shaft load |
| B. | step pulse frequency |
| C. | polarity of stator current |
| D. | magnitude of stator current. |
| Answer» B. step pulse frequency | |
| 268. |
Which of the following phase switching sequence represents half-step operation of a VR stepper motor ? |
| A. | a, b, c,a…….. |
| B. | a, c, b,a……. |
| C. | ab, bc, ca, ab…….. |
| D. | a, ab, b, bc…….. |
| Answer» D. a, ab, b, bc…….. | |
| 269. |
What is the first phase of traffic regulation? |
| A. | driver controls |
| B. | vehicle controls |
| C. | traffic flow regulations |
| D. | general controls |
| Answer» A. driver controls | |
| 270. |
What is the step angle of a permanent- magnet stepper motor having 8 stator poles |
| A. | clear visibility |
| B. | easy recognition |
| C. | sufficient time for driver |
| D. | traffic population |
| Answer» D. traffic population | |
| 271. |
The minimum age for attaining a license for a geared vehicle is? |
| A. | 16 years |
| B. | 18 years |
| C. | 20 years |
| D. | 21 years |
| Answer» B. 18 years | |
| 272. |
Traffic symbols are classified into how many categories? |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» C. three | |
| 273. |
The symbol when violated which may lead to offense is? |
| A. | cautionary |
| B. | mandatory |
| C. | informatary |
| D. | both informatory and cautionary |
| Answer» B. mandatory | |
| 274. |
Which of the following is a disadvantage in one way traffic? |
| A. | increase in average travel speed |
| B. | more effective coordination of signal system |
| C. | more stream lined movement of vehicles |
| D. | more chances of overtaking |
| Answer» D. more chances of overtaking | |
| 275. |
The total conflict points at a junction on both two way roads are? |
| A. | one |
| B. | four |
| C. | five |
| D. | six |
| Answer» D. six | |
| 276. |
The maximum number of conflict points is formed in |
| A. | one way regulation on one road |
| B. | one way regulation on two roads |
| C. | two way regulation on one road |
| D. | two way regulation on both roads |
| Answer» D. two way regulation on both roads | |
| 277. |
The specifications for road signs are specified by |
| A. | irc 6 |
| B. | irc 21 |
| C. | irc 67 |
| D. | irc 97 |
| Answer» C. irc 67 | |
| 278. |
The diameter of the small size information board is? |
| A. | 600mm |
| B. | 900mm |
| C. | 1200mm |
| D. | 1500mm |
| Answer» A. 600mm | |
| 279. |
Which type of board should be installed if the speed limit is 100kmph? |
| A. | small |
| B. | medium |
| C. | large |
| D. | not required |
| Answer» C. large | |
| 280. |
Give way sign is of |
| A. | triangular shape |
| B. | circular shape |
| C. | octagonal shape |
| D. | hexagonal shape |
| Answer» A. triangular shape | |
| 281. |
STOP sign is having |
| A. | octagonal shape |
| B. | circular shape |
| C. | triangular shape |
| D. | any shape |
| Answer» A. octagonal shape | |
| 282. |
The clearance time is indicated by |
| A. | red |
| B. | amber |
| C. | green |
| D. | white |
| Answer» B. amber | |
| 283. |
converts the programs written in assembly language into machine instructions. |
| A. | machine compiler |
| B. | interpreter |
| C. | assembler |
| D. | converter |
| Answer» C. assembler | |
| 284. |
The instructions like MOV or ADD are called as |
| A. | op-code |
| B. | operators |
| C. | commands |
| D. | none of the mentioned |
| Answer» A. op-code | |
| 285. |
Instructions which won’t appear in the object program are called as |
| A. | redundant instructions |
| B. | exceptions |
| C. | comments |
| D. | assembler directives |
| Answer» D. assembler directives | |
| 286. |
The assembler directive EQU, when used in the instruction: Sum EQU 200 does |
| A. | finds the first occurrence of sum and assigns value 200 to it |
| B. | replaces every occurrence of sum with 200 |
| C. | re-assigns the address of sum by adding 200 to its original address |
| D. | assigns 200 bytes of memory starting the location of sum |
| Answer» B. replaces every occurrence of sum with 200 | |
| 287. |
The purpose of the ORIGIN directive is |
| A. | to indicate the starting position in memory, where the program block is to be stored |
| B. | to indicate the starting of the computation code |
| C. | to indicate the purpose of the code |
| D. | to list the locations of all the registers used |
| Answer» A. to indicate the starting position in memory, where the program block is to be stored | |
| 288. |
The directive used to perform initialization before the execution of the code is |
| A. | reserve |
| B. | store |
| C. | dataword |
| D. | equ |
| Answer» C. dataword | |
| 289. |
directive is used to specify and assign the memory required for the block of code. |
| A. | allocate |
| B. | assign |
| C. | set |
| D. | reserve |
| Answer» D. reserve | |
| 290. |
directive specifies the end of execution of a program. |
| A. | end |
| B. | return |
| C. | stop |
| D. | terminate |
| Answer» B. return | |
| 291. |
The last statement of the source program should be |
| A. | stop |
| B. | return |
| C. | op |
| D. | end |
| Answer» D. end | |
| 292. |
When dealing with the branching code the assembler |
| A. | replaces the target with its address |
| B. | does not replace until the test condition is satisfied |
| C. | finds the branch offset and replaces the branch target with it |
| D. | replaces the target with the value specified by the dataword directive |
| Answer» C. finds the branch offset and replaces the branch target with it | |
| 293. |
The assembler stores all the names and their corresponding values in |
| A. | special purpose register |
| B. | symbol table |
| C. | value map set |
| D. | none of the mentioned |
| Answer» B. symbol table | |
| 294. |
The assembler stores the object code in |
| A. | main memory |
| B. | cache |
| C. | ram |
| D. | magnetic disk |
| Answer» D. magnetic disk | |
| 295. |
The utility program used to bring the object code into memory for execution is |
| A. | loader |
| B. | fetcher |
| C. | extractor |
| D. | linker |
| Answer» A. loader | |
| 296. |
To overcome the problems of the assembler in dealing with branching code we use |
| A. | interpreter |
| B. | debugger |
| C. | op-assembler |
| D. | two-pass assembler |
| Answer» D. two-pass assembler | |
| 297. |
A register is defined as |
| A. | the group of latches for storing one bit of information |
| B. | the group of latches for storing n-bit of information |
| C. | the group of flip-flops suitable for storing one bit of information |
| D. | the group of flip-flops suitable for storing binary information |
| Answer» D. the group of flip-flops suitable for storing binary information | |
| 298. |
How many types of registers are? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 299. |
The main difference between a register and a counter is |
| A. | a register has no specific sequence of states |
| B. | a counter has no specific sequence of states |
| C. | a register has capability to store one bit of information but counter has n-bit |
| D. | a register counts data |
| Answer» A. a register has no specific sequence of states | |
| 300. |
In D register, ‘D’ stands for |
| A. | delay |
| B. | decrement |
| C. | data |
| D. | decay |
| Answer» C. data | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.