GATE ME NAT 22: A 8 kg body moves at 6 m/s. Enter kinetic energy in joules.
Correct Answer: 144
Explanation:
KE=½mv²=144.0 J.
MCQ Collection
GATE ME NAT MCQs
Practice GATE ME NAT questions with answers and explanations.
GATE ME NAT 23: A heat engine receives 810 kJ and rejects 90 kJ. Enter efficiency as a percentage.
Correct Answer: 88.89
Explanation:
η=(Qin−Qout)/Qin=88.89%.
GATE ME NAT 24: A constant force of 2 N moves a body 5 m in its direction. Enter work in joules.
Correct Answer: 10
Explanation:
W=Fd=10 J.
GATE ME NAT 11: A heat engine receives 400 kJ and rejects 80 kJ. Enter efficiency as a percentage.
Correct Answer: 80
Explanation:
η=(Qin−Qout)/Qin=80.0%.
GATE ME NAT 12: A constant force of 6 N moves a body 4 m in its direction. Enter work in joules.
Correct Answer: 24
Explanation:
W=Fd=24 J.
GATE ME NAT 13: A 7 kg body moves at 7 m/s. Enter kinetic energy in joules.
Correct Answer: 171.5
Explanation:
KE=½mv²=171.5 J.
GATE ME NAT 14: A heat engine receives 240 kJ and rejects 30 kJ. Enter efficiency as a percentage.
Correct Answer: 87.5
Explanation:
η=(Qin−Qout)/Qin=87.5%.
GATE ME NAT 15: A constant force of 9 N moves a body 6 m in its direction. Enter work in joules.
Correct Answer: 54
Explanation:
W=Fd=54 J.
GATE ME NAT 1: A 3 kg body moves at 6 m/s. Enter kinetic energy in joules.
Correct Answer: 54
Explanation:
KE=½mv²=54.0 J.
GATE ME NAT 2: A heat engine receives 360 kJ and rejects 90 kJ. Enter efficiency as a percentage.
Correct Answer: 75
Explanation:
η=(Qin−Qout)/Qin=75.0%.
GATE ME NAT 3: A constant force of 5 N moves a body 5 m in its direction. Enter work in joules.
Correct Answer: 25
Explanation:
W=Fd=25 J.
GATE ME NAT 4: A 6 kg body moves at 8 m/s. Enter kinetic energy in joules.
Correct Answer: 192
Explanation:
KE=½mv²=192.0 J.